It is time.

ui/views/view.cc

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#define _USE_MATH_DEFINES // For VC++ to get M_PI. This has to be first.
-
-#include "ui/views/view.h"
-
-#include <algorithm>
-#include <cmath>
-
-#include "base/debug/trace_event.h"
-#include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/message_loop/message_loop.h"
-#include "base/strings/stringprintf.h"
-#include "base/strings/utf_string_conversions.h"
-#include "third_party/skia/include/core/SkRect.h"
-#include "ui/accessibility/ax_enums.h"
-#include "ui/base/cursor/cursor.h"
-#include "ui/base/dragdrop/drag_drop_types.h"
-#include "ui/compositor/compositor.h"
-#include "ui/compositor/dip_util.h"
-#include "ui/compositor/layer.h"
-#include "ui/compositor/layer_animator.h"
-#include "ui/events/event_target_iterator.h"
-#include "ui/gfx/canvas.h"
-#include "ui/gfx/interpolated_transform.h"
-#include "ui/gfx/path.h"
-#include "ui/gfx/point3_f.h"
-#include "ui/gfx/point_conversions.h"
-#include "ui/gfx/scoped_canvas.h"
-#include "ui/gfx/screen.h"
-#include "ui/gfx/skia_util.h"
-#include "ui/gfx/transform.h"
-#include "ui/native_theme/native_theme.h"
-#include "ui/views/accessibility/native_view_accessibility.h"
-#include "ui/views/background.h"
-#include "ui/views/border.h"
-#include "ui/views/context_menu_controller.h"
-#include "ui/views/drag_controller.h"
-#include "ui/views/focus/view_storage.h"
-#include "ui/views/layout/layout_manager.h"
-#include "ui/views/views_delegate.h"
-#include "ui/views/widget/native_widget_private.h"
-#include "ui/views/widget/root_view.h"
-#include "ui/views/widget/tooltip_manager.h"
-#include "ui/views/widget/widget.h"
-
-#if defined(OS_WIN)
-#include "base/win/scoped_gdi_object.h"
-#endif
-
-namespace {
-
-#if defined(OS_WIN)
-const bool kContextMenuOnMousePress = false;
-#else
-const bool kContextMenuOnMousePress = true;
-#endif
-
-// Default horizontal drag threshold in pixels.
-// Same as what gtk uses.
-const int kDefaultHorizontalDragThreshold = 8;
-
-// Default vertical drag threshold in pixels.
-// Same as what gtk uses.
-const int kDefaultVerticalDragThreshold = 8;
-
-// Returns the top view in |view|'s hierarchy.
-const views::View* GetHierarchyRoot(const views::View* view) {
-  const views::View* root = view;
-  while (root && root->parent())
-    root = root->parent();
-  return root;
-}
-
-}  // namespace
-
-namespace views {
-
-namespace internal {
-
-}  // namespace internal
-
-// static
-ViewsDelegate* ViewsDelegate::views_delegate = NULL;
-
-// static
-const char View::kViewClassName[] = "View";
-
-////////////////////////////////////////////////////////////////////////////////
-// View, public:
-
-// Creation and lifetime -------------------------------------------------------
-
-View::View()
-    : owned_by_client_(false),
-      id_(0),
-      group_(-1),
-      parent_(NULL),
-      visible_(true),
-      enabled_(true),
-      notify_enter_exit_on_child_(false),
-      registered_for_visible_bounds_notification_(false),
-      root_bounds_dirty_(true),
-      clip_insets_(0, 0, 0, 0),
-      needs_layout_(true),
-      snap_layer_to_pixel_boundary_(false),
-      flip_canvas_on_paint_for_rtl_ui_(false),
-      paint_to_layer_(false),
-      accelerator_focus_manager_(NULL),
-      registered_accelerator_count_(0),
-      next_focusable_view_(NULL),
-      previous_focusable_view_(NULL),
-      focusable_(false),
-      accessibility_focusable_(false),
-      context_menu_controller_(NULL),
-      drag_controller_(NULL),
-      native_view_accessibility_(NULL) {
-}
-
-View::~View() {
-  if (parent_)
-    parent_->RemoveChildView(this);
-
-  ViewStorage::GetInstance()->ViewRemoved(this);
-
-  for (Views::const_iterator i(children_.begin()); i != children_.end(); ++i) {
-    (*i)->parent_ = NULL;
-    if (!(*i)->owned_by_client_)
-      delete *i;
-  }
-
-  // Release ownership of the native accessibility object, but it's
-  // reference-counted on some platforms, so it may not be deleted right away.
-  if (native_view_accessibility_)
-    native_view_accessibility_->Destroy();
-}
-
-// Tree operations -------------------------------------------------------------
-
-const Widget* View::GetWidget() const {
-  // The root view holds a reference to this view hierarchy's Widget.
-  return parent_ ? parent_->GetWidget() : NULL;
-}
-
-Widget* View::GetWidget() {
-  return const_cast<Widget*>(const_cast<const View*>(this)->GetWidget());
-}
-
-void View::AddChildView(View* view) {
-  if (view->parent_ == this)
-    return;
-  AddChildViewAt(view, child_count());
-}
-
-void View::AddChildViewAt(View* view, int index) {
-  CHECK_NE(view, this) << "You cannot add a view as its own child";
-  DCHECK_GE(index, 0);
-  DCHECK_LE(index, child_count());
-
-  // If |view| has a parent, remove it from its parent.
-  View* parent = view->parent_;
-  ui::NativeTheme* old_theme = NULL;
-  if (parent) {
-    old_theme = view->GetNativeTheme();
-    if (parent == this) {
-      ReorderChildView(view, index);
-      return;
-    }
-    parent->DoRemoveChildView(view, true, true, false, this);
-  }
-
-  // Sets the prev/next focus views.
-  InitFocusSiblings(view, index);
-
-  // Let's insert the view.
-  view->parent_ = this;
-  children_.insert(children_.begin() + index, view);
-
-  // Instruct the view to recompute its root bounds on next Paint().
-  view->SetRootBoundsDirty(true);
-
-  views::Widget* widget = GetWidget();
-  if (widget) {
-    const ui::NativeTheme* new_theme = view->GetNativeTheme();
-    if (new_theme != old_theme)
-      view->PropagateNativeThemeChanged(new_theme);
-  }
-
-  ViewHierarchyChangedDetails details(true, this, view, parent);
-
-  for (View* v = this; v; v = v->parent_)
-    v->ViewHierarchyChangedImpl(false, details);
-
-  view->PropagateAddNotifications(details);
-  UpdateTooltip();
-  if (widget) {
-    RegisterChildrenForVisibleBoundsNotification(view);
-    if (view->visible())
-      view->SchedulePaint();
-  }
-
-  if (layout_manager_.get())
-    layout_manager_->ViewAdded(this, view);
-
-  ReorderLayers();
-
-  // Make sure the visibility of the child layers are correct.
-  // If any of the parent View is hidden, then the layers of the subtree
-  // rooted at |this| should be hidden. Otherwise, all the child layers should
-  // inherit the visibility of the owner View.
-  UpdateLayerVisibility();
-}
-
-void View::ReorderChildView(View* view, int index) {
-  DCHECK_EQ(view->parent_, this);
-  if (index < 0)
-    index = child_count() - 1;
-  else if (index >= child_count())
-    return;
-  if (children_[index] == view)
-    return;
-
-  const Views::iterator i(std::find(children_.begin(), children_.end(), view));
-  DCHECK(i != children_.end());
-  children_.erase(i);
-
-  // Unlink the view first
-  View* next_focusable = view->next_focusable_view_;
-  View* prev_focusable = view->previous_focusable_view_;
-  if (prev_focusable)
-    prev_focusable->next_focusable_view_ = next_focusable;
-  if (next_focusable)
-    next_focusable->previous_focusable_view_ = prev_focusable;
-
-  // Add it in the specified index now.
-  InitFocusSiblings(view, index);
-  children_.insert(children_.begin() + index, view);
-
-  ReorderLayers();
-}
-
-void View::RemoveChildView(View* view) {
-  DoRemoveChildView(view, true, true, false, NULL);
-}
-
-void View::RemoveAllChildViews(bool delete_children) {
-  while (!children_.empty())
-    DoRemoveChildView(children_.front(), false, false, delete_children, NULL);
-  UpdateTooltip();
-}
-
-bool View::Contains(const View* view) const {
-  for (const View* v = view; v; v = v->parent_) {
-    if (v == this)
-      return true;
-  }
-  return false;
-}
-
-int View::GetIndexOf(const View* view) const {
-  Views::const_iterator i(std::find(children_.begin(), children_.end(), view));
-  return i != children_.end() ? static_cast<int>(i - children_.begin()) : -1;
-}
-
-// Size and disposition --------------------------------------------------------
-
-void View::SetBounds(int x, int y, int width, int height) {
-  SetBoundsRect(gfx::Rect(x, y, std::max(0, width), std::max(0, height)));
-}
-
-void View::SetBoundsRect(const gfx::Rect& bounds) {
-  if (bounds == bounds_) {
-    if (needs_layout_) {
-      needs_layout_ = false;
-      Layout();
-    }
-    return;
-  }
-
-  if (visible_) {
-    // Paint where the view is currently.
-    SchedulePaintBoundsChanged(
-        bounds_.size() == bounds.size() ? SCHEDULE_PAINT_SIZE_SAME :
-        SCHEDULE_PAINT_SIZE_CHANGED);
-  }
-
-  gfx::Rect prev = bounds_;
-  bounds_ = bounds;
-  BoundsChanged(prev);
-}
-
-void View::SetSize(const gfx::Size& size) {
-  SetBounds(x(), y(), size.width(), size.height());
-}
-
-void View::SetPosition(const gfx::Point& position) {
-  SetBounds(position.x(), position.y(), width(), height());
-}
-
-void View::SetX(int x) {
-  SetBounds(x, y(), width(), height());
-}
-
-void View::SetY(int y) {
-  SetBounds(x(), y, width(), height());
-}
-
-gfx::Rect View::GetContentsBounds() const {
-  gfx::Rect contents_bounds(GetLocalBounds());
-  if (border_.get())
-    contents_bounds.Inset(border_->GetInsets());
-  return contents_bounds;
-}
-
-gfx::Rect View::GetLocalBounds() const {
-  return gfx::Rect(size());
-}
-
-gfx::Rect View::GetLayerBoundsInPixel() const {
-  return layer()->GetTargetBounds();
-}
-
-gfx::Insets View::GetInsets() const {
-  return border_.get() ? border_->GetInsets() : gfx::Insets();
-}
-
-gfx::Rect View::GetVisibleBounds() const {
-  if (!IsDrawn())
-    return gfx::Rect();
-  gfx::Rect vis_bounds(GetLocalBounds());
-  gfx::Rect ancestor_bounds;
-  const View* view = this;
-  gfx::Transform transform;
-
-  while (view != NULL && !vis_bounds.IsEmpty()) {
-    transform.ConcatTransform(view->GetTransform());
-    gfx::Transform translation;
-    translation.Translate(static_cast<float>(view->GetMirroredX()),
-                          static_cast<float>(view->y()));
-    transform.ConcatTransform(translation);
-
-    vis_bounds = view->ConvertRectToParent(vis_bounds);
-    const View* ancestor = view->parent_;
-    if (ancestor != NULL) {
-      ancestor_bounds.SetRect(0, 0, ancestor->width(), ancestor->height());
-      vis_bounds.Intersect(ancestor_bounds);
-    } else if (!view->GetWidget()) {
-      // If the view has no Widget, we're not visible. Return an empty rect.
-      return gfx::Rect();
-    }
-    view = ancestor;
-  }
-  if (vis_bounds.IsEmpty())
-    return vis_bounds;
-  // Convert back to this views coordinate system.
-  gfx::RectF views_vis_bounds(vis_bounds);
-  transform.TransformRectReverse(&views_vis_bounds);
-  // Partially visible pixels should be considered visible.
-  return gfx::ToEnclosingRect(views_vis_bounds);
-}
-
-gfx::Rect View::GetBoundsInScreen() const {
-  gfx::Point origin;
-  View::ConvertPointToScreen(this, &origin);
-  return gfx::Rect(origin, size());
-}
-
-gfx::Size View::GetPreferredSize() const {
-  if (layout_manager_.get())
-    return layout_manager_->GetPreferredSize(this);
-  return gfx::Size();
-}
-
-int View::GetBaseline() const {
-  return -1;
-}
-
-void View::SizeToPreferredSize() {
-  gfx::Size prefsize = GetPreferredSize();
-  if ((prefsize.width() != width()) || (prefsize.height() != height()))
-    SetBounds(x(), y(), prefsize.width(), prefsize.height());
-}
-
-gfx::Size View::GetMinimumSize() const {
-  return GetPreferredSize();
-}
-
-gfx::Size View::GetMaximumSize() const {
-  return gfx::Size();
-}
-
-int View::GetHeightForWidth(int w) const {
-  if (layout_manager_.get())
-    return layout_manager_->GetPreferredHeightForWidth(this, w);
-  return GetPreferredSize().height();
-}
-
-void View::SetVisible(bool visible) {
-  if (visible != visible_) {
-    // If the View is currently visible, schedule paint to refresh parent.
-    // TODO(beng): not sure we should be doing this if we have a layer.
-    if (visible_)
-      SchedulePaint();
-
-    visible_ = visible;
-    AdvanceFocusIfNecessary();
-
-    // Notify the parent.
-    if (parent_)
-      parent_->ChildVisibilityChanged(this);
-
-    // This notifies all sub-views recursively.
-    PropagateVisibilityNotifications(this, visible_);
-    UpdateLayerVisibility();
-
-    // If we are newly visible, schedule paint.
-    if (visible_) {
-      SchedulePaint();
-    } else {
-      // We're never painted when hidden, so no need to be in the BoundsTree.
-      BoundsTree* bounds_tree = GetBoundsTreeFromPaintRoot();
-      if (bounds_tree)
-        RemoveRootBounds(bounds_tree);
-    }
-  }
-}
-
-bool View::IsDrawn() const {
-  return visible_ && parent_ ? parent_->IsDrawn() : false;
-}
-
-void View::SetEnabled(bool enabled) {
-  if (enabled != enabled_) {
-    enabled_ = enabled;
-    AdvanceFocusIfNecessary();
-    OnEnabledChanged();
-  }
-}
-
-void View::OnEnabledChanged() {
-  SchedulePaint();
-}
-
-// Transformations -------------------------------------------------------------
-
-gfx::Transform View::GetTransform() const {
-  return layer() ? layer()->transform() : gfx::Transform();
-}
-
-void View::SetTransform(const gfx::Transform& transform) {
-  if (transform.IsIdentity()) {
-    if (layer()) {
-      layer()->SetTransform(transform);
-      if (!paint_to_layer_)
-        DestroyLayer();
-    } else {
-      // Nothing.
-    }
-  } else {
-    if (!layer())
-      CreateLayer();
-    layer()->SetTransform(transform);
-    layer()->ScheduleDraw();
-  }
-}
-
-void View::SetPaintToLayer(bool paint_to_layer) {
-  if (paint_to_layer_ == paint_to_layer)
-    return;
-
-  // If this is a change in state we will also need to update bounds trees.
-  if (paint_to_layer) {
-    // Gaining a layer means becoming a paint root. We must remove ourselves
-    // from our old paint root, if we had one. Traverse up view tree to find old
-    // paint root.
-    View* old_paint_root = parent_;
-    while (old_paint_root && !old_paint_root->IsPaintRoot())
-      old_paint_root = old_paint_root->parent_;
-
-    // Remove our and our children's bounds from the old tree. This will also
-    // mark all of our bounds as dirty.
-    if (old_paint_root && old_paint_root->bounds_tree_)
-      RemoveRootBounds(old_paint_root->bounds_tree_.get());
-
-  } else {
-    // Losing a layer means we are no longer a paint root, so delete our
-    // bounds tree and mark ourselves as dirty for future insertion into our
-    // new paint root's bounds tree.
-    bounds_tree_.reset();
-    SetRootBoundsDirty(true);
-  }
-
-  paint_to_layer_ = paint_to_layer;
-  if (paint_to_layer_ && !layer()) {
-    CreateLayer();
-  } else if (!paint_to_layer_ && layer()) {
-    DestroyLayer();
-  }
-}
-
-// RTL positioning -------------------------------------------------------------
-
-gfx::Rect View::GetMirroredBounds() const {
-  gfx::Rect bounds(bounds_);
-  bounds.set_x(GetMirroredX());
-  return bounds;
-}
-
-gfx::Point View::GetMirroredPosition() const {
-  return gfx::Point(GetMirroredX(), y());
-}
-
-int View::GetMirroredX() const {
-  return parent_ ? parent_->GetMirroredXForRect(bounds_) : x();
-}
-
-int View::GetMirroredXForRect(const gfx::Rect& bounds) const {
-  return base::i18n::IsRTL() ?
-      (width() - bounds.x() - bounds.width()) : bounds.x();
-}
-
-int View::GetMirroredXInView(int x) const {
-  return base::i18n::IsRTL() ? width() - x : x;
-}
-
-int View::GetMirroredXWithWidthInView(int x, int w) const {
-  return base::i18n::IsRTL() ? width() - x - w : x;
-}
-
-// Layout ----------------------------------------------------------------------
-
-void View::Layout() {
-  needs_layout_ = false;
-
-  // If we have a layout manager, let it handle the layout for us.
-  if (layout_manager_.get())
-    layout_manager_->Layout(this);
-
-  // Make sure to propagate the Layout() call to any children that haven't
-  // received it yet through the layout manager and need to be laid out. This
-  // is needed for the case when the child requires a layout but its bounds
-  // weren't changed by the layout manager. If there is no layout manager, we
-  // just propagate the Layout() call down the hierarchy, so whoever receives
-  // the call can take appropriate action.
-  for (int i = 0, count = child_count(); i < count; ++i) {
-    View* child = child_at(i);
-    if (child->needs_layout_ || !layout_manager_.get()) {
-      child->needs_layout_ = false;
-      child->Layout();
-    }
-  }
-}
-
-void View::InvalidateLayout() {
-  // Always invalidate up. This is needed to handle the case of us already being
-  // valid, but not our parent.
-  needs_layout_ = true;
-  if (parent_)
-    parent_->InvalidateLayout();
-}
-
-LayoutManager* View::GetLayoutManager() const {
-  return layout_manager_.get();
-}
-
-void View::SetLayoutManager(LayoutManager* layout_manager) {
-  if (layout_manager_.get())
-    layout_manager_->Uninstalled(this);
-
-  layout_manager_.reset(layout_manager);
-  if (layout_manager_.get())
-    layout_manager_->Installed(this);
-}
-
-void View::SnapLayerToPixelBoundary() {
-  if (!layer())
-    return;
-
-  if (snap_layer_to_pixel_boundary_ && layer()->parent() &&
-      layer()->GetCompositor()) {
-    ui::SnapLayerToPhysicalPixelBoundary(layer()->parent(), layer());
-  } else {
-    // Reset the offset.
-    layer()->SetSubpixelPositionOffset(gfx::Vector2dF());
-  }
-}
-
-// Attributes ------------------------------------------------------------------
-
-const char* View::GetClassName() const {
-  return kViewClassName;
-}
-
-const View* View::GetAncestorWithClassName(const std::string& name) const {
-  for (const View* view = this; view; view = view->parent_) {
-    if (!strcmp(view->GetClassName(), name.c_str()))
-      return view;
-  }
-  return NULL;
-}
-
-View* View::GetAncestorWithClassName(const std::string& name) {
-  return const_cast<View*>(const_cast<const View*>(this)->
-      GetAncestorWithClassName(name));
-}
-
-const View* View::GetViewByID(int id) const {
-  if (id == id_)
-    return const_cast<View*>(this);
-
-  for (int i = 0, count = child_count(); i < count; ++i) {
-    const View* view = child_at(i)->GetViewByID(id);
-    if (view)
-      return view;
-  }
-  return NULL;
-}
-
-View* View::GetViewByID(int id) {
-  return const_cast<View*>(const_cast<const View*>(this)->GetViewByID(id));
-}
-
-void View::SetGroup(int gid) {
-  // Don't change the group id once it's set.
-  DCHECK(group_ == -1 || group_ == gid);
-  group_ = gid;
-}
-
-int View::GetGroup() const {
-  return group_;
-}
-
-bool View::IsGroupFocusTraversable() const {
-  return true;
-}
-
-void View::GetViewsInGroup(int group, Views* views) {
-  if (group_ == group)
-    views->push_back(this);
-
-  for (int i = 0, count = child_count(); i < count; ++i)
-    child_at(i)->GetViewsInGroup(group, views);
-}
-
-View* View::GetSelectedViewForGroup(int group) {
-  Views views;
-  GetWidget()->GetRootView()->GetViewsInGroup(group, &views);
-  return views.empty() ? NULL : views[0];
-}
-
-// Coordinate conversion -------------------------------------------------------
-
-// static
-void View::ConvertPointToTarget(const View* source,
-                                const View* target,
-                                gfx::Point* point) {
-  DCHECK(source);
-  DCHECK(target);
-  if (source == target)
-    return;
-
-  const View* root = GetHierarchyRoot(target);
-  CHECK_EQ(GetHierarchyRoot(source), root);
-
-  if (source != root)
-    source->ConvertPointForAncestor(root, point);
-
-  if (target != root)
-    target->ConvertPointFromAncestor(root, point);
-}
-
-// static
-void View::ConvertRectToTarget(const View* source,
-                               const View* target,
-                               gfx::RectF* rect) {
-  DCHECK(source);
-  DCHECK(target);
-  if (source == target)
-    return;
-
-  const View* root = GetHierarchyRoot(target);
-  CHECK_EQ(GetHierarchyRoot(source), root);
-
-  if (source != root)
-    source->ConvertRectForAncestor(root, rect);
-
-  if (target != root)
-    target->ConvertRectFromAncestor(root, rect);
-}
-
-// static
-void View::ConvertPointToWidget(const View* src, gfx::Point* p) {
-  DCHECK(src);
-  DCHECK(p);
-
-  src->ConvertPointForAncestor(NULL, p);
-}
-
-// static
-void View::ConvertPointFromWidget(const View* dest, gfx::Point* p) {
-  DCHECK(dest);
-  DCHECK(p);
-
-  dest->ConvertPointFromAncestor(NULL, p);
-}
-
-// static
-void View::ConvertPointToScreen(const View* src, gfx::Point* p) {
-  DCHECK(src);
-  DCHECK(p);
-
-  // If the view is not connected to a tree, there's nothing we can do.
-  const Widget* widget = src->GetWidget();
-  if (widget) {
-    ConvertPointToWidget(src, p);
-    *p += widget->GetClientAreaBoundsInScreen().OffsetFromOrigin();
-  }
-}
-
-// static
-void View::ConvertPointFromScreen(const View* dst, gfx::Point* p) {
-  DCHECK(dst);
-  DCHECK(p);
-
-  const views::Widget* widget = dst->GetWidget();
-  if (!widget)
-    return;
-  *p -= widget->GetClientAreaBoundsInScreen().OffsetFromOrigin();
-  views::View::ConvertPointFromWidget(dst, p);
-}
-
-gfx::Rect View::ConvertRectToParent(const gfx::Rect& rect) const {
-  gfx::RectF x_rect = rect;
-  GetTransform().TransformRect(&x_rect);
-  x_rect.Offset(GetMirroredPosition().OffsetFromOrigin());
-  // Pixels we partially occupy in the parent should be included.
-  return gfx::ToEnclosingRect(x_rect);
-}
-
-gfx::Rect View::ConvertRectToWidget(const gfx::Rect& rect) const {
-  gfx::Rect x_rect = rect;
-  for (const View* v = this; v; v = v->parent_)
-    x_rect = v->ConvertRectToParent(x_rect);
-  return x_rect;
-}
-
-// Painting --------------------------------------------------------------------
-
-void View::SchedulePaint() {
-  SchedulePaintInRect(GetLocalBounds());
-}
-
-void View::SchedulePaintInRect(const gfx::Rect& rect) {
-  if (!visible_)
-    return;
-
-  if (layer()) {
-    layer()->SchedulePaint(rect);
-  } else if (parent_) {
-    // Translate the requested paint rect to the parent's coordinate system
-    // then pass this notification up to the parent.
-    parent_->SchedulePaintInRect(ConvertRectToParent(rect));
-  }
-}
-
-void View::Paint(gfx::Canvas* canvas, const CullSet& cull_set) {
-  // The cull_set may allow us to skip painting without canvas construction or
-  // even canvas rect intersection.
-  if (cull_set.ShouldPaint(this)) {
-    TRACE_EVENT1("views", "View::Paint", "class", GetClassName());
-
-    gfx::ScopedCanvas scoped_canvas(canvas);
-
-    // Paint this View and its children, setting the clip rect to the bounds
-    // of this View and translating the origin to the local bounds' top left
-    // point.
-    //
-    // Note that the X (or left) position we pass to ClipRectInt takes into
-    // consideration whether or not the view uses a right-to-left layout so that
-    // we paint our view in its mirrored position if need be.
-    gfx::Rect clip_rect = bounds();
-    clip_rect.Inset(clip_insets_);
-    if (parent_)
-      clip_rect.set_x(parent_->GetMirroredXForRect(clip_rect));
-    canvas->ClipRect(clip_rect);
-    if (canvas->IsClipEmpty())
-      return;
-
-    // Non-empty clip, translate the graphics such that 0,0 corresponds to where
-    // this view is located (related to its parent).
-    canvas->Translate(GetMirroredPosition().OffsetFromOrigin());
-    canvas->Transform(GetTransform());
-
-    // If we are a paint root, we need to construct our own CullSet object for
-    // propagation to our children.
-    if (IsPaintRoot()) {
-      if (!bounds_tree_)
-        bounds_tree_.reset(new BoundsTree(2, 5));
-
-      // Recompute our bounds tree as needed.
-      UpdateRootBounds(bounds_tree_.get(), gfx::Vector2d());
-
-      // Grab the clip rect from the supplied canvas to use as the query rect.
-      gfx::Rect canvas_bounds;
-      if (!canvas->GetClipBounds(&canvas_bounds)) {
-        NOTREACHED() << "Failed to get clip bounds from the canvas!";
-        return;
-      }
-
-      // Now query our bounds_tree_ for a set of damaged views that intersect
-      // our canvas bounds.
-      scoped_ptr<base::hash_set<intptr_t> > damaged_views(
-          new base::hash_set<intptr_t>());
-      bounds_tree_->AppendIntersectingRecords(
-          canvas_bounds, damaged_views.get());
-      // Construct a CullSet to wrap the damaged views set, it will delete it
-      // for us on scope exit.
-      CullSet paint_root_cull_set(damaged_views.Pass());
-      // Paint all descendents using our new cull set.
-      PaintCommon(canvas, paint_root_cull_set);
-    } else {
-      // Not a paint root, so we can proceed as normal.
-      PaintCommon(canvas, cull_set);
-    }
-  }
-}
-
-void View::set_background(Background* b) {
-  background_.reset(b);
-}
-
-void View::SetBorder(scoped_ptr<Border> b) { border_ = b.Pass(); }
-
-ui::ThemeProvider* View::GetThemeProvider() const {
-  const Widget* widget = GetWidget();
-  return widget ? widget->GetThemeProvider() : NULL;
-}
-
-const ui::NativeTheme* View::GetNativeTheme() const {
-  const Widget* widget = GetWidget();
-  return widget ? widget->GetNativeTheme() : ui::NativeTheme::instance();
-}
-
-// Input -----------------------------------------------------------------------
-
-View* View::GetEventHandlerForPoint(const gfx::Point& point) {
-  return GetEventHandlerForRect(gfx::Rect(point, gfx::Size(1, 1)));
-}
-
-View* View::GetEventHandlerForRect(const gfx::Rect& rect) {
-  return GetEffectiveViewTargeter()->TargetForRect(this, rect);
-}
-
-bool View::CanProcessEventsWithinSubtree() const {
-  return true;
-}
-
-View* View::GetTooltipHandlerForPoint(const gfx::Point& point) {
-  // TODO(tdanderson): Move this implementation into ViewTargetDelegate.
-  if (!HitTestPoint(point) || !CanProcessEventsWithinSubtree())
-    return NULL;
-
-  // Walk the child Views recursively looking for the View that most
-  // tightly encloses the specified point.
-  for (int i = child_count() - 1; i >= 0; --i) {
-    View* child = child_at(i);
-    if (!child->visible())
-      continue;
-
-    gfx::Point point_in_child_coords(point);
-    ConvertPointToTarget(this, child, &point_in_child_coords);
-    View* handler = child->GetTooltipHandlerForPoint(point_in_child_coords);
-    if (handler)
-      return handler;
-  }
-  return this;
-}
-
-gfx::NativeCursor View::GetCursor(const ui::MouseEvent& event) {
-#if defined(OS_WIN)
-  static ui::Cursor arrow;
-  if (!arrow.platform())
-    arrow.SetPlatformCursor(LoadCursor(NULL, IDC_ARROW));
-  return arrow;
-#else
-  return gfx::kNullCursor;
-#endif
-}
-
-bool View::HitTestPoint(const gfx::Point& point) const {
-  return HitTestRect(gfx::Rect(point, gfx::Size(1, 1)));
-}
-
-bool View::HitTestRect(const gfx::Rect& rect) const {
-  return GetEffectiveViewTargeter()->DoesIntersectRect(this, rect);
-}
-
-bool View::IsMouseHovered() {
-  // If we haven't yet been placed in an onscreen view hierarchy, we can't be
-  // hovered.
-  if (!GetWidget())
-    return false;
-
-  // If mouse events are disabled, then the mouse cursor is invisible and
-  // is therefore not hovering over this button.
-  if (!GetWidget()->IsMouseEventsEnabled())
-    return false;
-
-  gfx::Point cursor_pos(gfx::Screen::GetScreenFor(
-      GetWidget()->GetNativeView())->GetCursorScreenPoint());
-  ConvertPointFromScreen(this, &cursor_pos);
-  return HitTestPoint(cursor_pos);
-}
-
-bool View::OnMousePressed(const ui::MouseEvent& event) {
-  return false;
-}
-
-bool View::OnMouseDragged(const ui::MouseEvent& event) {
-  return false;
-}
-
-void View::OnMouseReleased(const ui::MouseEvent& event) {
-}
-
-void View::OnMouseCaptureLost() {
-}
-
-void View::OnMouseMoved(const ui::MouseEvent& event) {
-}
-
-void View::OnMouseEntered(const ui::MouseEvent& event) {
-}
-
-void View::OnMouseExited(const ui::MouseEvent& event) {
-}
-
-void View::SetMouseHandler(View* new_mouse_handler) {
-  // |new_mouse_handler| may be NULL.
-  if (parent_)
-    parent_->SetMouseHandler(new_mouse_handler);
-}
-
-bool View::OnKeyPressed(const ui::KeyEvent& event) {
-  return false;
-}
-
-bool View::OnKeyReleased(const ui::KeyEvent& event) {
-  return false;
-}
-
-bool View::OnMouseWheel(const ui::MouseWheelEvent& event) {
-  return false;
-}
-
-void View::OnKeyEvent(ui::KeyEvent* event) {
-  bool consumed = (event->type() == ui::ET_KEY_PRESSED) ? OnKeyPressed(*event) :
-                                                          OnKeyReleased(*event);
-  if (consumed)
-    event->StopPropagation();
-}
-
-void View::OnMouseEvent(ui::MouseEvent* event) {
-  switch (event->type()) {
-    case ui::ET_MOUSE_PRESSED:
-      if (ProcessMousePressed(*event))
-        event->SetHandled();
-      return;
-
-    case ui::ET_MOUSE_MOVED:
-      if ((event->flags() & (ui::EF_LEFT_MOUSE_BUTTON |
-                             ui::EF_RIGHT_MOUSE_BUTTON |
-                             ui::EF_MIDDLE_MOUSE_BUTTON)) == 0) {
-        OnMouseMoved(*event);
-        return;
-      }
-      // FALL-THROUGH
-    case ui::ET_MOUSE_DRAGGED:
-      if (ProcessMouseDragged(*event))
-        event->SetHandled();
-      return;
-
-    case ui::ET_MOUSE_RELEASED:
-      ProcessMouseReleased(*event);
-      return;
-
-    case ui::ET_MOUSEWHEEL:
-      if (OnMouseWheel(*static_cast<ui::MouseWheelEvent*>(event)))
-        event->SetHandled();
-      break;
-
-    case ui::ET_MOUSE_ENTERED:
-      if (event->flags() & ui::EF_TOUCH_ACCESSIBILITY)
-        NotifyAccessibilityEvent(ui::AX_EVENT_HOVER, true);
-      OnMouseEntered(*event);
-      break;
-
-    case ui::ET_MOUSE_EXITED:
-      OnMouseExited(*event);
-      break;
-
-    default:
-      return;
-  }
-}
-
-void View::OnScrollEvent(ui::ScrollEvent* event) {
-}
-
-void View::OnTouchEvent(ui::TouchEvent* event) {
-  NOTREACHED() << "Views should not receive touch events.";
-}
-
-void View::OnGestureEvent(ui::GestureEvent* event) {
-}
-
-ui::TextInputClient* View::GetTextInputClient() {
-  return NULL;
-}
-
-InputMethod* View::GetInputMethod() {
-  Widget* widget = GetWidget();
-  return widget ? widget->GetInputMethod() : NULL;
-}
-
-const InputMethod* View::GetInputMethod() const {
-  const Widget* widget = GetWidget();
-  return widget ? widget->GetInputMethod() : NULL;
-}
-
-scoped_ptr<ViewTargeter>
-View::SetEventTargeter(scoped_ptr<ViewTargeter> targeter) {
-  scoped_ptr<ViewTargeter> old_targeter = targeter_.Pass();
-  targeter_ = targeter.Pass();
-  return old_targeter.Pass();
-}
-
-ViewTargeter* View::GetEffectiveViewTargeter() const {
-  DCHECK(GetWidget());
-  ViewTargeter* view_targeter = targeter();
-  if (!view_targeter)
-    view_targeter = GetWidget()->GetRootView()->targeter();
-  CHECK(view_targeter);
-  return view_targeter;
-}
-
-bool View::CanAcceptEvent(const ui::Event& event) {
-  return IsDrawn();
-}
-
-ui::EventTarget* View::GetParentTarget() {
-  return parent_;
-}
-
-scoped_ptr<ui::EventTargetIterator> View::GetChildIterator() {
-  return scoped_ptr<ui::EventTargetIterator>(
-      new ui::EventTargetIteratorImpl<View>(children_));
-}
-
-ui::EventTargeter* View::GetEventTargeter() {
-  return targeter_.get();
-}
-
-void View::ConvertEventToTarget(ui::EventTarget* target,
-                                ui::LocatedEvent* event) {
-  event->ConvertLocationToTarget(this, static_cast<View*>(target));
-}
-
-// Accelerators ----------------------------------------------------------------
-
-void View::AddAccelerator(const ui::Accelerator& accelerator) {
-  if (!accelerators_.get())
-    accelerators_.reset(new std::vector<ui::Accelerator>());
-
-  if (std::find(accelerators_->begin(), accelerators_->end(), accelerator) ==
-      accelerators_->end()) {
-    accelerators_->push_back(accelerator);
-  }
-  RegisterPendingAccelerators();
-}
-
-void View::RemoveAccelerator(const ui::Accelerator& accelerator) {
-  if (!accelerators_.get()) {
-    NOTREACHED() << "Removing non-existing accelerator";
-    return;
-  }
-
-  std::vector<ui::Accelerator>::iterator i(
-      std::find(accelerators_->begin(), accelerators_->end(), accelerator));
-  if (i == accelerators_->end()) {
-    NOTREACHED() << "Removing non-existing accelerator";
-    return;
-  }
-
-  size_t index = i - accelerators_->begin();
-  accelerators_->erase(i);
-  if (index >= registered_accelerator_count_) {
-    // The accelerator is not registered to FocusManager.
-    return;
-  }
-  --registered_accelerator_count_;
-
-  // Providing we are attached to a Widget and registered with a focus manager,
-  // we should de-register from that focus manager now.
-  if (GetWidget() && accelerator_focus_manager_)
-    accelerator_focus_manager_->UnregisterAccelerator(accelerator, this);
-}
-
-void View::ResetAccelerators() {
-  if (accelerators_.get())
-    UnregisterAccelerators(false);
-}
-
-bool View::AcceleratorPressed(const ui::Accelerator& accelerator) {
-  return false;
-}
-
-bool View::CanHandleAccelerators() const {
-  return enabled() && IsDrawn() && GetWidget() && GetWidget()->IsVisible();
-}
-
-// Focus -----------------------------------------------------------------------
-
-bool View::HasFocus() const {
-  const FocusManager* focus_manager = GetFocusManager();
-  return focus_manager && (focus_manager->GetFocusedView() == this);
-}
-
-View* View::GetNextFocusableView() {
-  return next_focusable_view_;
-}
-
-const View* View::GetNextFocusableView() const {
-  return next_focusable_view_;
-}
-
-View* View::GetPreviousFocusableView() {
-  return previous_focusable_view_;
-}
-
-void View::SetNextFocusableView(View* view) {
-  if (view)
-    view->previous_focusable_view_ = this;
-  next_focusable_view_ = view;
-}
-
-void View::SetFocusable(bool focusable) {
-  if (focusable_ == focusable)
-    return;
-
-  focusable_ = focusable;
-  AdvanceFocusIfNecessary();
-}
-
-bool View::IsFocusable() const {
-  return focusable_ && enabled_ && IsDrawn();
-}
-
-bool View::IsAccessibilityFocusable() const {
-  return (focusable_ || accessibility_focusable_) && enabled_ && IsDrawn();
-}
-
-void View::SetAccessibilityFocusable(bool accessibility_focusable) {
-  if (accessibility_focusable_ == accessibility_focusable)
-    return;
-
-  accessibility_focusable_ = accessibility_focusable;
-  AdvanceFocusIfNecessary();
-}
-
-FocusManager* View::GetFocusManager() {
-  Widget* widget = GetWidget();
-  return widget ? widget->GetFocusManager() : NULL;
-}
-
-const FocusManager* View::GetFocusManager() const {
-  const Widget* widget = GetWidget();
-  return widget ? widget->GetFocusManager() : NULL;
-}
-
-void View::RequestFocus() {
-  FocusManager* focus_manager = GetFocusManager();
-  if (focus_manager && IsFocusable())
-    focus_manager->SetFocusedView(this);
-}
-
-bool View::SkipDefaultKeyEventProcessing(const ui::KeyEvent& event) {
-  return false;
-}
-
-FocusTraversable* View::GetFocusTraversable() {
-  return NULL;
-}
-
-FocusTraversable* View::GetPaneFocusTraversable() {
-  return NULL;
-}
-
-// Tooltips --------------------------------------------------------------------
-
-bool View::GetTooltipText(const gfx::Point& p, base::string16* tooltip) const {
-  return false;
-}
-
-bool View::GetTooltipTextOrigin(const gfx::Point& p, gfx::Point* loc) const {
-  return false;
-}
-
-// Context menus ---------------------------------------------------------------
-
-void View::ShowContextMenu(const gfx::Point& p,
-                           ui::MenuSourceType source_type) {
-  if (!context_menu_controller_)
-    return;
-
-  context_menu_controller_->ShowContextMenuForView(this, p, source_type);
-}
-
-// static
-bool View::ShouldShowContextMenuOnMousePress() {
-  return kContextMenuOnMousePress;
-}
-
-// Drag and drop ---------------------------------------------------------------
-
-bool View::GetDropFormats(
-      int* formats,
-      std::set<OSExchangeData::CustomFormat>* custom_formats) {
-  return false;
-}
-
-bool View::AreDropTypesRequired() {
-  return false;
-}
-
-bool View::CanDrop(const OSExchangeData& data) {
-  // TODO(sky): when I finish up migration, this should default to true.
-  return false;
-}
-
-void View::OnDragEntered(const ui::DropTargetEvent& event) {
-}
-
-int View::OnDragUpdated(const ui::DropTargetEvent& event) {
-  return ui::DragDropTypes::DRAG_NONE;
-}
-
-void View::OnDragExited() {
-}
-
-int View::OnPerformDrop(const ui::DropTargetEvent& event) {
-  return ui::DragDropTypes::DRAG_NONE;
-}
-
-void View::OnDragDone() {
-}
-
-// static
-bool View::ExceededDragThreshold(const gfx::Vector2d& delta) {
-  return (abs(delta.x()) > GetHorizontalDragThreshold() ||
-          abs(delta.y()) > GetVerticalDragThreshold());
-}
-
-// Accessibility----------------------------------------------------------------
-
-gfx::NativeViewAccessible View::GetNativeViewAccessible() {
-  if (!native_view_accessibility_)
-    native_view_accessibility_ = NativeViewAccessibility::Create(this);
-  if (native_view_accessibility_)
-    return native_view_accessibility_->GetNativeObject();
-  return NULL;
-}
-
-void View::NotifyAccessibilityEvent(
-    ui::AXEvent event_type,
-    bool send_native_event) {
-  if (ViewsDelegate::views_delegate)
-    ViewsDelegate::views_delegate->NotifyAccessibilityEvent(this, event_type);
-
-  if (send_native_event && GetWidget()) {
-    if (!native_view_accessibility_)
-      native_view_accessibility_ = NativeViewAccessibility::Create(this);
-    if (native_view_accessibility_)
-      native_view_accessibility_->NotifyAccessibilityEvent(event_type);
-  }
-}
-
-// Scrolling -------------------------------------------------------------------
-
-void View::ScrollRectToVisible(const gfx::Rect& rect) {
-  // We must take RTL UI mirroring into account when adjusting the position of
-  // the region.
-  if (parent_) {
-    gfx::Rect scroll_rect(rect);
-    scroll_rect.Offset(GetMirroredX(), y());
-    parent_->ScrollRectToVisible(scroll_rect);
-  }
-}
-
-int View::GetPageScrollIncrement(ScrollView* scroll_view,
-                                 bool is_horizontal, bool is_positive) {
-  return 0;
-}
-
-int View::GetLineScrollIncrement(ScrollView* scroll_view,
-                                 bool is_horizontal, bool is_positive) {
-  return 0;
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// View, protected:
-
-// Size and disposition --------------------------------------------------------
-
-void View::OnBoundsChanged(const gfx::Rect& previous_bounds) {
-}
-
-void View::PreferredSizeChanged() {
-  InvalidateLayout();
-  if (parent_)
-    parent_->ChildPreferredSizeChanged(this);
-}
-
-bool View::GetNeedsNotificationWhenVisibleBoundsChange() const {
-  return false;
-}
-
-void View::OnVisibleBoundsChanged() {
-}
-
-// Tree operations -------------------------------------------------------------
-
-void View::ViewHierarchyChanged(const ViewHierarchyChangedDetails& details) {
-}
-
-void View::VisibilityChanged(View* starting_from, bool is_visible) {
-}
-
-void View::NativeViewHierarchyChanged() {
-  FocusManager* focus_manager = GetFocusManager();
-  if (accelerator_focus_manager_ != focus_manager) {
-    UnregisterAccelerators(true);
-
-    if (focus_manager)
-      RegisterPendingAccelerators();
-  }
-}
-
-// Painting --------------------------------------------------------------------
-
-void View::PaintChildren(gfx::Canvas* canvas, const CullSet& cull_set) {
-  TRACE_EVENT1("views", "View::PaintChildren", "class", GetClassName());
-  for (int i = 0, count = child_count(); i < count; ++i)
-    if (!child_at(i)->layer())
-      child_at(i)->Paint(canvas, cull_set);
-}
-
-void View::OnPaint(gfx::Canvas* canvas) {
-  TRACE_EVENT1("views", "View::OnPaint", "class", GetClassName());
-  OnPaintBackground(canvas);
-  OnPaintBorder(canvas);
-}
-
-void View::OnPaintBackground(gfx::Canvas* canvas) {
-  if (background_.get()) {
-    TRACE_EVENT2("views", "View::OnPaintBackground",
-                 "width", canvas->sk_canvas()->getDevice()->width(),
-                 "height", canvas->sk_canvas()->getDevice()->height());
-    background_->Paint(canvas, this);
-  }
-}
-
-void View::OnPaintBorder(gfx::Canvas* canvas) {
-  if (border_.get()) {
-    TRACE_EVENT2("views", "View::OnPaintBorder",
-                 "width", canvas->sk_canvas()->getDevice()->width(),
-                 "height", canvas->sk_canvas()->getDevice()->height());
-    border_->Paint(*this, canvas);
-  }
-}
-
-bool View::IsPaintRoot() {
-  return paint_to_layer_ || !parent_;
-}
-
-// Accelerated Painting --------------------------------------------------------
-
-void View::SetFillsBoundsOpaquely(bool fills_bounds_opaquely) {
-  // This method should not have the side-effect of creating the layer.
-  if (layer())
-    layer()->SetFillsBoundsOpaquely(fills_bounds_opaquely);
-}
-
-gfx::Vector2d View::CalculateOffsetToAncestorWithLayer(
-    ui::Layer** layer_parent) {
-  if (layer()) {
-    if (layer_parent)
-      *layer_parent = layer();
-    return gfx::Vector2d();
-  }
-  if (!parent_)
-    return gfx::Vector2d();
-
-  return gfx::Vector2d(GetMirroredX(), y()) +
-      parent_->CalculateOffsetToAncestorWithLayer(layer_parent);
-}
-
-void View::UpdateParentLayer() {
-  if (!layer())
-    return;
-
-  ui::Layer* parent_layer = NULL;
-  gfx::Vector2d offset(GetMirroredX(), y());
-
-  if (parent_)
-    offset += parent_->CalculateOffsetToAncestorWithLayer(&parent_layer);
-
-  ReparentLayer(offset, parent_layer);
-}
-
-void View::MoveLayerToParent(ui::Layer* parent_layer,
-                             const gfx::Point& point) {
-  gfx::Point local_point(point);
-  if (parent_layer != layer())
-    local_point.Offset(GetMirroredX(), y());
-  if (layer() && parent_layer != layer()) {
-    parent_layer->Add(layer());
-    SetLayerBounds(gfx::Rect(local_point.x(), local_point.y(),
-                             width(), height()));
-  } else {
-    for (int i = 0, count = child_count(); i < count; ++i)
-      child_at(i)->MoveLayerToParent(parent_layer, local_point);
-  }
-}
-
-void View::UpdateLayerVisibility() {
-  bool visible = visible_;
-  for (const View* v = parent_; visible && v && !v->layer(); v = v->parent_)
-    visible = v->visible();
-
-  UpdateChildLayerVisibility(visible);
-}
-
-void View::UpdateChildLayerVisibility(bool ancestor_visible) {
-  if (layer()) {
-    layer()->SetVisible(ancestor_visible && visible_);
-  } else {
-    for (int i = 0, count = child_count(); i < count; ++i)
-      child_at(i)->UpdateChildLayerVisibility(ancestor_visible && visible_);
-  }
-}
-
-void View::UpdateChildLayerBounds(const gfx::Vector2d& offset) {
-  if (layer()) {
-    SetLayerBounds(GetLocalBounds() + offset);
-  } else {
-    for (int i = 0, count = child_count(); i < count; ++i) {
-      View* child = child_at(i);
-      child->UpdateChildLayerBounds(
-          offset + gfx::Vector2d(child->GetMirroredX(), child->y()));
-    }
-  }
-}
-
-void View::OnPaintLayer(gfx::Canvas* canvas) {
-  if (!layer() || !layer()->fills_bounds_opaquely())
-    canvas->DrawColor(SK_ColorBLACK, SkXfermode::kClear_Mode);
-  PaintCommon(canvas, CullSet());
-}
-
-void View::OnDelegatedFrameDamage(
-    const gfx::Rect& damage_rect_in_dip) {
-}
-
-void View::OnDeviceScaleFactorChanged(float device_scale_factor) {
-  snap_layer_to_pixel_boundary_ =
-      (device_scale_factor - std::floor(device_scale_factor)) != 0.0f;
-  SnapLayerToPixelBoundary();
-  // Repainting with new scale factor will paint the content at the right scale.
-}
-
-base::Closure View::PrepareForLayerBoundsChange() {
-  return base::Closure();
-}
-
-void View::ReorderLayers() {
-  View* v = this;
-  while (v && !v->layer())
-    v = v->parent();
-
-  Widget* widget = GetWidget();
-  if (!v) {
-    if (widget) {
-      ui::Layer* layer = widget->GetLayer();
-      if (layer)
-        widget->GetRootView()->ReorderChildLayers(layer);
-    }
-  } else {
-    v->ReorderChildLayers(v->layer());
-  }
-
-  if (widget) {
-    // Reorder the widget's child NativeViews in case a child NativeView is
-    // associated with a view (eg via a NativeViewHost). Always do the
-    // reordering because the associated NativeView's layer (if it has one)
-    // is parented to the widget's layer regardless of whether the host view has
-    // an ancestor with a layer.
-    widget->ReorderNativeViews();
-  }
-}
-
-void View::ReorderChildLayers(ui::Layer* parent_layer) {
-  if (layer() && layer() != parent_layer) {
-    DCHECK_EQ(parent_layer, layer()->parent());
-    parent_layer->StackAtBottom(layer());
-  } else {
-    // Iterate backwards through the children so that a child with a layer
-    // which is further to the back is stacked above one which is further to
-    // the front.
-    for (Views::reverse_iterator it(children_.rbegin());
-         it != children_.rend(); ++it) {
-      (*it)->ReorderChildLayers(parent_layer);
-    }
-  }
-}
-
-// Input -----------------------------------------------------------------------
-
-View::DragInfo* View::GetDragInfo() {
-  return parent_ ? parent_->GetDragInfo() : NULL;
-}
-
-// Focus -----------------------------------------------------------------------
-
-void View::OnFocus() {
-  // TODO(beng): Investigate whether it's possible for us to move this to
-  //             Focus().
-  // By default, we clear the native focus. This ensures that no visible native
-  // view as the focus and that we still receive keyboard inputs.
-  FocusManager* focus_manager = GetFocusManager();
-  if (focus_manager)
-    focus_manager->ClearNativeFocus();
-
-  // TODO(beng): Investigate whether it's possible for us to move this to
-  //             Focus().
-  // Notify assistive technologies of the focus change.
-  NotifyAccessibilityEvent(ui::AX_EVENT_FOCUS, true);
-}
-
-void View::OnBlur() {
-}
-
-void View::Focus() {
-  OnFocus();
-}
-
-void View::Blur() {
-  OnBlur();
-}
-
-// Tooltips --------------------------------------------------------------------
-
-void View::TooltipTextChanged() {
-  Widget* widget = GetWidget();
-  // TooltipManager may be null if there is a problem creating it.
-  if (widget && widget->GetTooltipManager())
-    widget->GetTooltipManager()->TooltipTextChanged(this);
-}
-
-// Context menus ---------------------------------------------------------------
-
-gfx::Point View::GetKeyboardContextMenuLocation() {
-  gfx::Rect vis_bounds = GetVisibleBounds();
-  gfx::Point screen_point(vis_bounds.x() + vis_bounds.width() / 2,
-                          vis_bounds.y() + vis_bounds.height() / 2);
-  ConvertPointToScreen(this, &screen_point);
-  return screen_point;
-}
-
-// Drag and drop ---------------------------------------------------------------
-
-int View::GetDragOperations(const gfx::Point& press_pt) {
-  return drag_controller_ ?
-      drag_controller_->GetDragOperationsForView(this, press_pt) :
-      ui::DragDropTypes::DRAG_NONE;
-}
-
-void View::WriteDragData(const gfx::Point& press_pt, OSExchangeData* data) {
-  DCHECK(drag_controller_);
-  drag_controller_->WriteDragDataForView(this, press_pt, data);
-}
-
-bool View::InDrag() {
-  Widget* widget = GetWidget();
-  return widget ? widget->dragged_view() == this : false;
-}
-
-int View::GetHorizontalDragThreshold() {
-  // TODO(jennyz): This value may need to be adjusted for different platforms
-  // and for different display density.
-  return kDefaultHorizontalDragThreshold;
-}
-
-int View::GetVerticalDragThreshold() {
-  // TODO(jennyz): This value may need to be adjusted for different platforms
-  // and for different display density.
-  return kDefaultVerticalDragThreshold;
-}
-
-// Debugging -------------------------------------------------------------------
-
-#if !defined(NDEBUG)
-
-std::string View::PrintViewGraph(bool first) {
-  return DoPrintViewGraph(first, this);
-}
-
-std::string View::DoPrintViewGraph(bool first, View* view_with_children) {
-  // 64-bit pointer = 16 bytes of hex + "0x" + '\0' = 19.
-  const size_t kMaxPointerStringLength = 19;
-
-  std::string result;
-
-  if (first)
-    result.append("digraph {\n");
-
-  // Node characteristics.
-  char p[kMaxPointerStringLength];
-
-  const std::string class_name(GetClassName());
-  size_t base_name_index = class_name.find_last_of('/');
-  if (base_name_index == std::string::npos)
-    base_name_index = 0;
-  else
-    base_name_index++;
-
-  char bounds_buffer[512];
-
-  // Information about current node.
-  base::snprintf(p, arraysize(bounds_buffer), "%p", view_with_children);
-  result.append("  N");
-  result.append(p + 2);
-  result.append(" [label=\"");
-
-  result.append(class_name.substr(base_name_index).c_str());
-
-  base::snprintf(bounds_buffer,
-                 arraysize(bounds_buffer),
-                 "\\n bounds: (%d, %d), (%dx%d)",
-                 bounds().x(),
-                 bounds().y(),
-                 bounds().width(),
-                 bounds().height());
-  result.append(bounds_buffer);
-
-  gfx::DecomposedTransform decomp;
-  if (!GetTransform().IsIdentity() &&
-      gfx::DecomposeTransform(&decomp, GetTransform())) {
-    base::snprintf(bounds_buffer,
-                   arraysize(bounds_buffer),
-                   "\\n translation: (%f, %f)",
-                   decomp.translate[0],
-                   decomp.translate[1]);
-    result.append(bounds_buffer);
-
-    base::snprintf(bounds_buffer,
-                   arraysize(bounds_buffer),
-                   "\\n rotation: %3.2f",
-                   std::acos(decomp.quaternion[3]) * 360.0 / M_PI);
-    result.append(bounds_buffer);
-
-    base::snprintf(bounds_buffer,
-                   arraysize(bounds_buffer),
-                   "\\n scale: (%2.4f, %2.4f)",
-                   decomp.scale[0],
-                   decomp.scale[1]);
-    result.append(bounds_buffer);
-  }
-
-  result.append("\"");
-  if (!parent_)
-    result.append(", shape=box");
-  if (layer()) {
-    if (layer()->has_external_content())
-      result.append(", color=green");
-    else
-      result.append(", color=red");
-
-    if (layer()->fills_bounds_opaquely())
-      result.append(", style=filled");
-  }
-  result.append("]\n");
-
-  // Link to parent.
-  if (parent_) {
-    char pp[kMaxPointerStringLength];
-
-    base::snprintf(pp, kMaxPointerStringLength, "%p", parent_);
-    result.append("  N");
-    result.append(pp + 2);
-    result.append(" -> N");
-    result.append(p + 2);
-    result.append("\n");
-  }
-
-  // Children.
-  for (int i = 0, count = view_with_children->child_count(); i < count; ++i)
-    result.append(view_with_children->child_at(i)->PrintViewGraph(false));
-
-  if (first)
-    result.append("}\n");
-
-  return result;
-}
-#endif
-
-////////////////////////////////////////////////////////////////////////////////
-// View, private:
-
-// DropInfo --------------------------------------------------------------------
-
-void View::DragInfo::Reset() {
-  possible_drag = false;
-  start_pt = gfx::Point();
-}
-
-void View::DragInfo::PossibleDrag(const gfx::Point& p) {
-  possible_drag = true;
-  start_pt = p;
-}
-
-// Painting --------------------------------------------------------------------
-
-void View::SchedulePaintBoundsChanged(SchedulePaintType type) {
-  // If we have a layer and the View's size did not change, we do not need to
-  // schedule any paints since the layer will be redrawn at its new location
-  // during the next Draw() cycle in the compositor.
-  if (!layer() || type == SCHEDULE_PAINT_SIZE_CHANGED) {
-    // Otherwise, if the size changes or we don't have a layer then we need to
-    // use SchedulePaint to invalidate the area occupied by the View.
-    SchedulePaint();
-  } else if (parent_ && type == SCHEDULE_PAINT_SIZE_SAME) {
-    // The compositor doesn't Draw() until something on screen changes, so
-    // if our position changes but nothing is being animated on screen, then
-    // tell the compositor to redraw the scene. We know layer() exists due to
-    // the above if clause.
-    layer()->ScheduleDraw();
-  }
-}
-
-void View::PaintCommon(gfx::Canvas* canvas, const CullSet& cull_set) {
-  if (!visible_)
-    return;
-
-  {
-    // If the View we are about to paint requested the canvas to be flipped, we
-    // should change the transform appropriately.
-    // The canvas mirroring is undone once the View is done painting so that we
-    // don't pass the canvas with the mirrored transform to Views that didn't
-    // request the canvas to be flipped.
-    gfx::ScopedCanvas scoped(canvas);
-    if (FlipCanvasOnPaintForRTLUI()) {
-      canvas->Translate(gfx::Vector2d(width(), 0));
-      canvas->Scale(-1, 1);
-    }
-
-    OnPaint(canvas);
-  }
-
-  PaintChildren(canvas, cull_set);
-}
-
-// Tree operations -------------------------------------------------------------
-
-void View::DoRemoveChildView(View* view,
-                             bool update_focus_cycle,
-                             bool update_tool_tip,
-                             bool delete_removed_view,
-                             View* new_parent) {
-  DCHECK(view);
-
-  const Views::iterator i(std::find(children_.begin(), children_.end(), view));
-  scoped_ptr<View> view_to_be_deleted;
-  if (i != children_.end()) {
-    if (update_focus_cycle) {
-      // Let's remove the view from the focus traversal.
-      View* next_focusable = view->next_focusable_view_;
-      View* prev_focusable = view->previous_focusable_view_;
-      if (prev_focusable)
-        prev_focusable->next_focusable_view_ = next_focusable;
-      if (next_focusable)
-        next_focusable->previous_focusable_view_ = prev_focusable;
-    }
-
-    if (GetWidget()) {
-      UnregisterChildrenForVisibleBoundsNotification(view);
-      if (view->visible())
-        view->SchedulePaint();
-      GetWidget()->NotifyWillRemoveView(view);
-    }
-
-    // Remove the bounds of this child and any of its descendants from our
-    // paint root bounds tree.
-    BoundsTree* bounds_tree = GetBoundsTreeFromPaintRoot();
-    if (bounds_tree)
-      view->RemoveRootBounds(bounds_tree);
-
-    view->PropagateRemoveNotifications(this, new_parent);
-    view->parent_ = NULL;
-    view->UpdateLayerVisibility();
-
-    if (delete_removed_view && !view->owned_by_client_)
-      view_to_be_deleted.reset(view);
-
-    children_.erase(i);
-  }
-
-  if (update_tool_tip)
-    UpdateTooltip();
-
-  if (layout_manager_.get())
-    layout_manager_->ViewRemoved(this, view);
-}
-
-void View::PropagateRemoveNotifications(View* old_parent, View* new_parent) {
-  for (int i = 0, count = child_count(); i < count; ++i)
-    child_at(i)->PropagateRemoveNotifications(old_parent, new_parent);
-
-  ViewHierarchyChangedDetails details(false, old_parent, this, new_parent);
-  for (View* v = this; v; v = v->parent_)
-    v->ViewHierarchyChangedImpl(true, details);
-}
-
-void View::PropagateAddNotifications(
-    const ViewHierarchyChangedDetails& details) {
-  for (int i = 0, count = child_count(); i < count; ++i)
-    child_at(i)->PropagateAddNotifications(details);
-  ViewHierarchyChangedImpl(true, details);
-}
-
-void View::PropagateNativeViewHierarchyChanged() {
-  for (int i = 0, count = child_count(); i < count; ++i)
-    child_at(i)->PropagateNativeViewHierarchyChanged();
-  NativeViewHierarchyChanged();
-}
-
-void View::ViewHierarchyChangedImpl(
-    bool register_accelerators,
-    const ViewHierarchyChangedDetails& details) {
-  if (register_accelerators) {
-    if (details.is_add) {
-      // If you get this registration, you are part of a subtree that has been
-      // added to the view hierarchy.
-      if (GetFocusManager())
-        RegisterPendingAccelerators();
-    } else {
-      if (details.child == this)
-        UnregisterAccelerators(true);
-    }
-  }
-
-  if (details.is_add && layer() && !layer()->parent()) {
-    UpdateParentLayer();
-    Widget* widget = GetWidget();
-    if (widget)
-      widget->UpdateRootLayers();
-  } else if (!details.is_add && details.child == this) {
-    // Make sure the layers belonging to the subtree rooted at |child| get
-    // removed from layers that do not belong in the same subtree.
-    OrphanLayers();
-    Widget* widget = GetWidget();
-    if (widget)
-      widget->UpdateRootLayers();
-  }
-
-  ViewHierarchyChanged(details);
-  details.parent->needs_layout_ = true;
-}
-
-void View::PropagateNativeThemeChanged(const ui::NativeTheme* theme) {
-  for (int i = 0, count = child_count(); i < count; ++i)
-    child_at(i)->PropagateNativeThemeChanged(theme);
-  OnNativeThemeChanged(theme);
-}
-
-// Size and disposition --------------------------------------------------------
-
-void View::PropagateVisibilityNotifications(View* start, bool is_visible) {
-  for (int i = 0, count = child_count(); i < count; ++i)
-    child_at(i)->PropagateVisibilityNotifications(start, is_visible);
-  VisibilityChangedImpl(start, is_visible);
-}
-
-void View::VisibilityChangedImpl(View* starting_from, bool is_visible) {
-  VisibilityChanged(starting_from, is_visible);
-}
-
-void View::BoundsChanged(const gfx::Rect& previous_bounds) {
-  // Mark our bounds as dirty for the paint root, also see if we need to
-  // recompute our children's bounds due to origin change.
-  bool origin_changed =
-      previous_bounds.OffsetFromOrigin() != bounds_.OffsetFromOrigin();
-  SetRootBoundsDirty(origin_changed);
-
-  if (visible_) {
-    // Paint the new bounds.
-    SchedulePaintBoundsChanged(
-        bounds_.size() == previous_bounds.size() ? SCHEDULE_PAINT_SIZE_SAME :
-        SCHEDULE_PAINT_SIZE_CHANGED);
-  }
-
-  if (layer()) {
-    if (parent_) {
-      SetLayerBounds(GetLocalBounds() +
-                     gfx::Vector2d(GetMirroredX(), y()) +
-                     parent_->CalculateOffsetToAncestorWithLayer(NULL));
-    } else {
-      SetLayerBounds(bounds_);
-    }
-  } else {
-    // If our bounds have changed, then any descendant layer bounds may have
-    // changed. Update them accordingly.
-    UpdateChildLayerBounds(CalculateOffsetToAncestorWithLayer(NULL));
-  }
-
-  OnBoundsChanged(previous_bounds);
-
-  if (previous_bounds.size() != size()) {
-    needs_layout_ = false;
-    Layout();
-  }
-
-  if (GetNeedsNotificationWhenVisibleBoundsChange())
-    OnVisibleBoundsChanged();
-
-  // Notify interested Views that visible bounds within the root view may have
-  // changed.
-  if (descendants_to_notify_.get()) {
-    for (Views::iterator i(descendants_to_notify_->begin());
-         i != descendants_to_notify_->end(); ++i) {
-      (*i)->OnVisibleBoundsChanged();
-    }
-  }
-}
-
-// static
-void View::RegisterChildrenForVisibleBoundsNotification(View* view) {
-  if (view->GetNeedsNotificationWhenVisibleBoundsChange())
-    view->RegisterForVisibleBoundsNotification();
-  for (int i = 0; i < view->child_count(); ++i)
-    RegisterChildrenForVisibleBoundsNotification(view->child_at(i));
-}
-
-// static
-void View::UnregisterChildrenForVisibleBoundsNotification(View* view) {
-  if (view->GetNeedsNotificationWhenVisibleBoundsChange())
-    view->UnregisterForVisibleBoundsNotification();
-  for (int i = 0; i < view->child_count(); ++i)
-    UnregisterChildrenForVisibleBoundsNotification(view->child_at(i));
-}
-
-void View::RegisterForVisibleBoundsNotification() {
-  if (registered_for_visible_bounds_notification_)
-    return;
-
-  registered_for_visible_bounds_notification_ = true;
-  for (View* ancestor = parent_; ancestor; ancestor = ancestor->parent_)
-    ancestor->AddDescendantToNotify(this);
-}
-
-void View::UnregisterForVisibleBoundsNotification() {
-  if (!registered_for_visible_bounds_notification_)
-    return;
-
-  registered_for_visible_bounds_notification_ = false;
-  for (View* ancestor = parent_; ancestor; ancestor = ancestor->parent_)
-    ancestor->RemoveDescendantToNotify(this);
-}
-
-void View::AddDescendantToNotify(View* view) {
-  DCHECK(view);
-  if (!descendants_to_notify_.get())
-    descendants_to_notify_.reset(new Views);
-  descendants_to_notify_->push_back(view);
-}
-
-void View::RemoveDescendantToNotify(View* view) {
-  DCHECK(view && descendants_to_notify_.get());
-  Views::iterator i(std::find(
-      descendants_to_notify_->begin(), descendants_to_notify_->end(), view));
-  DCHECK(i != descendants_to_notify_->end());
-  descendants_to_notify_->erase(i);
-  if (descendants_to_notify_->empty())
-    descendants_to_notify_.reset();
-}
-
-void View::SetLayerBounds(const gfx::Rect& bounds) {
-  layer()->SetBounds(bounds);
-  SnapLayerToPixelBoundary();
-}
-
-void View::SetRootBoundsDirty(bool origin_changed) {
-  root_bounds_dirty_ = true;
-
-  if (origin_changed) {
-    // Inform our children that their root bounds are dirty, as their relative
-    // coordinates in paint root space have changed since ours have changed.
-    for (Views::const_iterator i(children_.begin()); i != children_.end();
-         ++i) {
-      if (!(*i)->IsPaintRoot())
-        (*i)->SetRootBoundsDirty(origin_changed);
-    }
-  }
-}
-
-void View::UpdateRootBounds(BoundsTree* tree, const gfx::Vector2d& offset) {
-  // If we're not visible no need to update BoundsTree. When we are made visible
-  // the BoundsTree will be updated appropriately.
-  if (!visible_)
-    return;
-
-  if (!root_bounds_dirty_ && children_.empty())
-    return;
-
-  // No need to recompute bounds if we haven't flagged ours as dirty.
-  TRACE_EVENT1("views", "View::UpdateRootBounds", "class", GetClassName());
-
-  // Add our own offset to the provided offset, for our own bounds update and
-  // for propagation to our children if needed.
-  gfx::Vector2d view_offset = offset + GetMirroredBounds().OffsetFromOrigin();
-
-  // If our bounds have changed we must re-insert our new bounds to the tree.
-  if (root_bounds_dirty_) {
-    root_bounds_dirty_ = false;
-    gfx::Rect bounds(
-        view_offset.x(), view_offset.y(), bounds_.width(), bounds_.height());
-    tree->Insert(bounds, reinterpret_cast<intptr_t>(this));
-  }
-
-  // Update our children's bounds if needed.
-  for (Views::const_iterator i(children_.begin()); i != children_.end(); ++i) {
-    // We don't descend in to layer views for bounds recomputation, as they
-    // manage their own RTree as paint roots.
-    if (!(*i)->IsPaintRoot())
-      (*i)->UpdateRootBounds(tree, view_offset);
-  }
-}
-
-void View::RemoveRootBounds(BoundsTree* tree) {
-  tree->Remove(reinterpret_cast<intptr_t>(this));
-
-  root_bounds_dirty_ = true;
-
-  for (Views::const_iterator i(children_.begin()); i != children_.end(); ++i) {
-    if (!(*i)->IsPaintRoot())
-      (*i)->RemoveRootBounds(tree);
-  }
-}
-
-View::BoundsTree* View::GetBoundsTreeFromPaintRoot() {
-  BoundsTree* bounds_tree = bounds_tree_.get();
-  View* paint_root = this;
-  while (!bounds_tree && !paint_root->IsPaintRoot()) {
-    // Assumption is that if IsPaintRoot() is false then parent_ is valid.
-    DCHECK(paint_root);
-    paint_root = paint_root->parent_;
-    bounds_tree = paint_root->bounds_tree_.get();
-  }
-
-  return bounds_tree;
-}
-
-// Transformations -------------------------------------------------------------
-
-bool View::GetTransformRelativeTo(const View* ancestor,
-                                  gfx::Transform* transform) const {
-  const View* p = this;
-
-  while (p && p != ancestor) {
-    transform->ConcatTransform(p->GetTransform());
-    gfx::Transform translation;
-    translation.Translate(static_cast<float>(p->GetMirroredX()),
-                          static_cast<float>(p->y()));
-    transform->ConcatTransform(translation);
-
-    p = p->parent_;
-  }
-
-  return p == ancestor;
-}
-
-// Coordinate conversion -------------------------------------------------------
-
-bool View::ConvertPointForAncestor(const View* ancestor,
-                                   gfx::Point* point) const {
-  gfx::Transform trans;
-  // TODO(sad): Have some way of caching the transformation results.
-  bool result = GetTransformRelativeTo(ancestor, &trans);
-  gfx::Point3F p(*point);
-  trans.TransformPoint(&p);
-  *point = gfx::ToFlooredPoint(p.AsPointF());
-  return result;
-}
-
-bool View::ConvertPointFromAncestor(const View* ancestor,
-                                    gfx::Point* point) const {
-  gfx::Transform trans;
-  bool result = GetTransformRelativeTo(ancestor, &trans);
-  gfx::Point3F p(*point);
-  trans.TransformPointReverse(&p);
-  *point = gfx::ToFlooredPoint(p.AsPointF());
-  return result;
-}
-
-bool View::ConvertRectForAncestor(const View* ancestor,
-                                  gfx::RectF* rect) const {
-  gfx::Transform trans;
-  // TODO(sad): Have some way of caching the transformation results.
-  bool result = GetTransformRelativeTo(ancestor, &trans);
-  trans.TransformRect(rect);
-  return result;
-}
-
-bool View::ConvertRectFromAncestor(const View* ancestor,
-                                   gfx::RectF* rect) const {
-  gfx::Transform trans;
-  bool result = GetTransformRelativeTo(ancestor, &trans);
-  trans.TransformRectReverse(rect);
-  return result;
-}
-
-// Accelerated painting --------------------------------------------------------
-
-void View::CreateLayer() {
-  // A new layer is being created for the view. So all the layers of the
-  // sub-tree can inherit the visibility of the corresponding view.
-  for (int i = 0, count = child_count(); i < count; ++i)
-    child_at(i)->UpdateChildLayerVisibility(true);
-
-  SetLayer(new ui::Layer());
-  layer()->set_delegate(this);
-#if !defined(NDEBUG)
-  layer()->set_name(GetClassName());
-#endif
-
-  UpdateParentLayers();
-  UpdateLayerVisibility();
-
-  // The new layer needs to be ordered in the layer tree according
-  // to the view tree. Children of this layer were added in order
-  // in UpdateParentLayers().
-  if (parent())
-    parent()->ReorderLayers();
-
-  Widget* widget = GetWidget();
-  if (widget)
-    widget->UpdateRootLayers();
-}
-
-void View::UpdateParentLayers() {
-  // Attach all top-level un-parented layers.
-  if (layer() && !layer()->parent()) {
-    UpdateParentLayer();
-  } else {
-    for (int i = 0, count = child_count(); i < count; ++i)
-      child_at(i)->UpdateParentLayers();
-  }
-}
-
-void View::OrphanLayers() {
-  if (layer()) {
-    if (layer()->parent())
-      layer()->parent()->Remove(layer());
-
-    // The layer belonging to this View has already been orphaned. It is not
-    // necessary to orphan the child layers.
-    return;
-  }
-  for (int i = 0, count = child_count(); i < count; ++i)
-    child_at(i)->OrphanLayers();
-}
-
-void View::ReparentLayer(const gfx::Vector2d& offset, ui::Layer* parent_layer) {
-  layer()->SetBounds(GetLocalBounds() + offset);
-  DCHECK_NE(layer(), parent_layer);
-  if (parent_layer)
-    parent_layer->Add(layer());
-  layer()->SchedulePaint(GetLocalBounds());
-  MoveLayerToParent(layer(), gfx::Point());
-}
-
-void View::DestroyLayer() {
-  ui::Layer* new_parent = layer()->parent();
-  std::vector<ui::Layer*> children = layer()->children();
-  for (size_t i = 0; i < children.size(); ++i) {
-    layer()->Remove(children[i]);
-    if (new_parent)
-      new_parent->Add(children[i]);
-  }
-
-  LayerOwner::DestroyLayer();
-
-  if (new_parent)
-    ReorderLayers();
-
-  UpdateChildLayerBounds(CalculateOffsetToAncestorWithLayer(NULL));
-
-  SchedulePaint();
-
-  Widget* widget = GetWidget();
-  if (widget)
-    widget->UpdateRootLayers();
-}
-
-// Input -----------------------------------------------------------------------
-
-bool View::ProcessMousePressed(const ui::MouseEvent& event) {
-  int drag_operations =
-      (enabled_ && event.IsOnlyLeftMouseButton() &&
-       HitTestPoint(event.location())) ?
-       GetDragOperations(event.location()) : 0;
-  ContextMenuController* context_menu_controller = event.IsRightMouseButton() ?
-      context_menu_controller_ : 0;
-  View::DragInfo* drag_info = GetDragInfo();
-
-  // TODO(sky): for debugging 360238.
-  int storage_id = 0;
-  if (event.IsOnlyRightMouseButton() && context_menu_controller &&
-      kContextMenuOnMousePress && HitTestPoint(event.location())) {
-    ViewStorage* view_storage = ViewStorage::GetInstance();
-    storage_id = view_storage->CreateStorageID();
-    view_storage->StoreView(storage_id, this);
-  }
-
-  const bool enabled = enabled_;
-  const bool result = OnMousePressed(event);
-
-  if (!enabled)
-    return result;
-
-  if (event.IsOnlyRightMouseButton() && context_menu_controller &&
-      kContextMenuOnMousePress) {
-    // Assume that if there is a context menu controller we won't be deleted
-    // from mouse pressed.
-    gfx::Point location(event.location());
-    if (HitTestPoint(location)) {
-      if (storage_id != 0)
-        CHECK_EQ(this, ViewStorage::GetInstance()->RetrieveView(storage_id));
-      ConvertPointToScreen(this, &location);
-      ShowContextMenu(location, ui::MENU_SOURCE_MOUSE);
-      return true;
-    }
-  }
-
-  // WARNING: we may have been deleted, don't use any View variables.
-  if (drag_operations != ui::DragDropTypes::DRAG_NONE) {
-    drag_info->PossibleDrag(event.location());
-    return true;
-  }
-  return !!context_menu_controller || result;
-}
-
-bool View::ProcessMouseDragged(const ui::MouseEvent& event) {
-  // Copy the field, that way if we're deleted after drag and drop no harm is
-  // done.
-  ContextMenuController* context_menu_controller = context_menu_controller_;
-  const bool possible_drag = GetDragInfo()->possible_drag;
-  if (possible_drag &&
-      ExceededDragThreshold(GetDragInfo()->start_pt - event.location()) &&
-      (!drag_controller_ ||
-       drag_controller_->CanStartDragForView(
-           this, GetDragInfo()->start_pt, event.location()))) {
-    DoDrag(event, GetDragInfo()->start_pt,
-           ui::DragDropTypes::DRAG_EVENT_SOURCE_MOUSE);
-  } else {
-    if (OnMouseDragged(event))
-      return true;
-    // Fall through to return value based on context menu controller.
-  }
-  // WARNING: we may have been deleted.
-  return (context_menu_controller != NULL) || possible_drag;
-}
-
-void View::ProcessMouseReleased(const ui::MouseEvent& event) {
-  if (!kContextMenuOnMousePress && context_menu_controller_ &&
-      event.IsOnlyRightMouseButton()) {
-    // Assume that if there is a context menu controller we won't be deleted
-    // from mouse released.
-    gfx::Point location(event.location());
-    OnMouseReleased(event);
-    if (HitTestPoint(location)) {
-      ConvertPointToScreen(this, &location);
-      ShowContextMenu(location, ui::MENU_SOURCE_MOUSE);
-    }
-  } else {
-    OnMouseReleased(event);
-  }
-  // WARNING: we may have been deleted.
-}
-
-// Accelerators ----------------------------------------------------------------
-
-void View::RegisterPendingAccelerators() {
-  if (!accelerators_.get() ||
-      registered_accelerator_count_ == accelerators_->size()) {
-    // No accelerators are waiting for registration.
-    return;
-  }
-
-  if (!GetWidget()) {
-    // The view is not yet attached to a widget, defer registration until then.
-    return;
-  }
-
-  accelerator_focus_manager_ = GetFocusManager();
-  if (!accelerator_focus_manager_) {
-    // Some crash reports seem to show that we may get cases where we have no
-    // focus manager (see bug #1291225).  This should never be the case, just
-    // making sure we don't crash.
-    NOTREACHED();
-    return;
-  }
-  for (std::vector<ui::Accelerator>::const_iterator i(
-           accelerators_->begin() + registered_accelerator_count_);
-       i != accelerators_->end(); ++i) {
-    accelerator_focus_manager_->RegisterAccelerator(
-        *i, ui::AcceleratorManager::kNormalPriority, this);
-  }
-  registered_accelerator_count_ = accelerators_->size();
-}
-
-void View::UnregisterAccelerators(bool leave_data_intact) {
-  if (!accelerators_.get())
-    return;
-
-  if (GetWidget()) {
-    if (accelerator_focus_manager_) {
-      accelerator_focus_manager_->UnregisterAccelerators(this);
-      accelerator_focus_manager_ = NULL;
-    }
-    if (!leave_data_intact) {
-      accelerators_->clear();
-      accelerators_.reset();
-    }
-    registered_accelerator_count_ = 0;
-  }
-}
-
-// Focus -----------------------------------------------------------------------
-
-void View::InitFocusSiblings(View* v, int index) {
-  int count = child_count();
-
-  if (count == 0) {
-    v->next_focusable_view_ = NULL;
-    v->previous_focusable_view_ = NULL;
-  } else {
-    if (index == count) {
-      // We are inserting at the end, but the end of the child list may not be
-      // the last focusable element. Let's try to find an element with no next
-      // focusable element to link to.
-      View* last_focusable_view = NULL;
-      for (Views::iterator i(children_.begin()); i != children_.end(); ++i) {
-          if (!(*i)->next_focusable_view_) {
-            last_focusable_view = *i;
-            break;
-          }
-      }
-      if (last_focusable_view == NULL) {
-        // Hum... there is a cycle in the focus list. Let's just insert ourself
-        // after the last child.
-        View* prev = children_[index - 1];
-        v->previous_focusable_view_ = prev;
-        v->next_focusable_view_ = prev->next_focusable_view_;
-        prev->next_focusable_view_->previous_focusable_view_ = v;
-        prev->next_focusable_view_ = v;
-      } else {
-        last_focusable_view->next_focusable_view_ = v;
-        v->next_focusable_view_ = NULL;
-        v->previous_focusable_view_ = last_focusable_view;
-      }
-    } else {
-      View* prev = children_[index]->GetPreviousFocusableView();
-      v->previous_focusable_view_ = prev;
-      v->next_focusable_view_ = children_[index];
-      if (prev)
-        prev->next_focusable_view_ = v;
-      children_[index]->previous_focusable_view_ = v;
-    }
-  }
-}
-
-void View::AdvanceFocusIfNecessary() {
-  // Focus should only be advanced if this is the focused view and has become
-  // unfocusable. If the view is still focusable or is not focused, we can
-  // return early avoiding furthur unnecessary checks. Focusability check is
-  // performed first as it tends to be faster.
-  if (IsAccessibilityFocusable() || !HasFocus())
-    return;
-
-  FocusManager* focus_manager = GetFocusManager();
-  if (focus_manager)
-    focus_manager->AdvanceFocusIfNecessary();
-}
-
-// System events ---------------------------------------------------------------
-
-void View::PropagateThemeChanged() {
-  for (int i = child_count() - 1; i >= 0; --i)
-    child_at(i)->PropagateThemeChanged();
-  OnThemeChanged();
-}
-
-void View::PropagateLocaleChanged() {
-  for (int i = child_count() - 1; i >= 0; --i)
-    child_at(i)->PropagateLocaleChanged();
-  OnLocaleChanged();
-}
-
-// Tooltips --------------------------------------------------------------------
-
-void View::UpdateTooltip() {
-  Widget* widget = GetWidget();
-  // TODO(beng): The TooltipManager NULL check can be removed when we
-  //             consolidate Init() methods and make views_unittests Init() all
-  //             Widgets that it uses.
-  if (widget && widget->GetTooltipManager())
-    widget->GetTooltipManager()->UpdateTooltip();
-}
-
-// Drag and drop ---------------------------------------------------------------
-
-bool View::DoDrag(const ui::LocatedEvent& event,
-                  const gfx::Point& press_pt,
-                  ui::DragDropTypes::DragEventSource source) {
-  int drag_operations = GetDragOperations(press_pt);
-  if (drag_operations == ui::DragDropTypes::DRAG_NONE)
-    return false;
-
-  Widget* widget = GetWidget();
-  // We should only start a drag from an event, implying we have a widget.
-  DCHECK(widget);
-
-  // Don't attempt to start a drag while in the process of dragging. This is
-  // especially important on X where we can get multiple mouse move events when
-  // we start the drag.
-  if (widget->dragged_view())
-    return false;
-
-  OSExchangeData data;
-  WriteDragData(press_pt, &data);
-
-  // Message the RootView to do the drag and drop. That way if we're removed
-  // the RootView can detect it and avoid calling us back.
-  gfx::Point widget_location(event.location());
-  ConvertPointToWidget(this, &widget_location);
-  widget->RunShellDrag(this, data, widget_location, drag_operations, source);
-  // WARNING: we may have been deleted.
-  return true;
-}
-
-}  // namespace views