Revert of Introduce AndroidFocusRules and NativeWidgetAndroid

ui/views/widget/android/native_widget_android.cc

-// Copyright 2015 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.
-
-#include "ui/views/widget/android/native_widget_android.h"
-
-#include "base/bind.h"
-#include "base/macros.h"
-#include "base/run_loop.h"
-#include "base/strings/string_util.h"
-#include "third_party/skia/include/core/SkRegion.h"
-#include "ui/aura/client/aura_constants.h"
-#include "ui/aura/client/cursor_client.h"
-#include "ui/aura/client/default_capture_client.h"
-#include "ui/aura/client/focus_client.h"
-#include "ui/aura/client/screen_position_client.h"
-#include "ui/aura/client/window_tree_client.h"
-#include "ui/aura/env.h"
-#include "ui/aura/window.h"
-#include "ui/aura/window_event_dispatcher.h"
-#include "ui/aura/window_observer.h"
-#include "ui/aura/window_tree_host.h"
-#include "ui/base/dragdrop/os_exchange_data.h"
-#include "ui/base/ui_base_types.h"
-#include "ui/compositor/layer.h"
-#include "ui/events/event.h"
-#include "ui/gfx/canvas.h"
-#include "ui/gfx/font_list.h"
-#include "ui/gfx/screen.h"
-#include "ui/native_theme/native_theme_aura.h"
-#include "ui/views/drag_utils.h"
-#include "ui/views/views_delegate.h"
-#include "ui/views/widget/android/android_focus_rules.h"
-#include "ui/views/widget/native_widget_aura.h"
-#include "ui/views/widget/native_widget_delegate.h"
-#include "ui/views/widget/root_view.h"
-#include "ui/views/widget/tooltip_manager_aura.h"
-#include "ui/views/widget/widget_aura_utils.h"
-#include "ui/views/widget/widget_delegate.h"
-#include "ui/views/widget/window_reorderer.h"
-#include "ui/wm/core/default_activation_client.h"
-#include "ui/wm/core/default_screen_position_client.h"
-#include "ui/wm/core/focus_controller.h"
-#include "ui/wm/core/shadow_types.h"
-#include "ui/wm/core/window_animations.h"
-#include "ui/wm/core/window_util.h"
-#include "ui/wm/public/activation_client.h"
-#include "ui/wm/public/dispatcher_client.h"
-#include "ui/wm/public/drag_drop_client.h"
-#include "ui/wm/public/window_move_client.h"
-#include "ui/wm/public/window_types.h"
-
-// TODO(bshe): Most of the code is copied from NativeWidgetAura or
-// DesktopNativeWidgetAura. Share more code instead of duplicate code when
-// possible. crbug.com/554961.
-namespace {
-
-class WindowTreeClientImpl : public aura::client::WindowTreeClient {
- public:
-  explicit WindowTreeClientImpl(aura::Window* root_window)
-      : root_window_(root_window) {
-    aura::client::SetWindowTreeClient(root_window_, this);
-  }
-  ~WindowTreeClientImpl() override {
-    aura::client::SetWindowTreeClient(root_window_, nullptr);
-  }
-
-  // Overridden from client::WindowTreeClient:
-  aura::Window* GetDefaultParent(aura::Window* context,
-                                 aura::Window* window,
-                                 const gfx::Rect& bounds) override {
-    return root_window_;
-  }
-
- private:
-  aura::Window* root_window_;
-
-  DISALLOW_COPY_AND_ASSIGN(WindowTreeClientImpl);
-};
-
-// TODO(bshe|jonross): Get rid of nested message loop once crbug.com/523680 is
-// fixed.
-class AndroidDispatcherClient : public aura::client::DispatcherClient {
- public:
-  AndroidDispatcherClient() {}
-  ~AndroidDispatcherClient() override {}
-
-  // aura::client::DispatcherClient:
-  void PrepareNestedLoopClosures(base::MessagePumpDispatcher* dispatcher,
-                                 base::Closure* run_closure,
-                                 base::Closure* quit_closure) override {
-    scoped_ptr<base::RunLoop> run_loop(new base::RunLoop());
-    *quit_closure = run_loop->QuitClosure();
-    *run_closure =
-        base::Bind(&AndroidDispatcherClient::RunNestedDispatcher,
-                   base::Unretained(this), base::Passed(&run_loop), dispatcher);
-  }
-
- private:
-  void RunNestedDispatcher(scoped_ptr<base::RunLoop> run_loop,
-                           base::MessagePumpDispatcher* dispatcher) {
-    base::MessageLoopForUI* loop = base::MessageLoopForUI::current();
-    base::MessageLoop::ScopedNestableTaskAllower allow(loop);
-    run_loop->Run();
-  }
-
-  DISALLOW_COPY_AND_ASSIGN(AndroidDispatcherClient);
-};
-
-}  // namespace
-
-namespace views {
-
-////////////////////////////////////////////////////////////////////////////////
-// NativeWidgetAndroid, public
-
-NativeWidgetAndroid::NativeWidgetAndroid(
-    internal::NativeWidgetDelegate* delegate)
-    : delegate_(delegate),
-      window_(new aura::Window(this)),
-      ownership_(Widget::InitParams::NATIVE_WIDGET_OWNS_WIDGET),
-      destroying_(false),
-      cursor_(gfx::kNullCursor),
-      saved_window_state_(ui::SHOW_STATE_DEFAULT),
-      close_widget_factory_(this) {
-  aura::client::SetFocusChangeObserver(window_, this);
-  aura::client::SetActivationChangeObserver(window_, this);
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// NativeWidgetAndroid, internal::NativeWidgetPrivate implementation:
-
-void NativeWidgetAndroid::InitNativeWidget(const Widget::InitParams& params) {
-  ownership_ = params.ownership;
-  NativeWidgetAura::RegisterNativeWidgetForWindow(this, window_);
-
-  window_->SetType(GetAuraWindowTypeForWidgetType(params.type));
-  window_->Init(params.layer_type);
-  wm::SetShadowType(window_, wm::SHADOW_TYPE_NONE);
-  window_->Show();
-
-  // TODO(bshe): Get rid of the hard coded size. Tracked in crbug.com/551923.
-  host_.reset(aura::WindowTreeHost::Create(gfx::Rect(0, 0, 800, 600)));
-  host_->InitHost();
-  host_->AddObserver(this);
-
-  window_tree_client_.reset(new WindowTreeClientImpl(host_->window()));
-
-  focus_client_.reset(new wm::FocusController(new AndroidFocusRules));
-  aura::client::SetFocusClient(host_->window(), focus_client_.get());
-  host_->window()->AddPreTargetHandler(focus_client_.get());
-
-  new wm::DefaultActivationClient(host_->window());
-
-  capture_client_.reset(
-      new aura::client::DefaultCaptureClient(host_->window()));
-
-  screen_position_client_.reset(new wm::DefaultScreenPositionClient);
-  aura::client::SetScreenPositionClient(host_->window(),
-                                        screen_position_client_.get());
-  dispatcher_client_.reset(new AndroidDispatcherClient);
-  aura::client::SetDispatcherClient(host_->window(), dispatcher_client_.get());
-
-  delegate_->OnNativeWidgetCreated(false);
-
-  DCHECK(GetWidget()->GetRootView());
-  if (params.type != Widget::InitParams::TYPE_TOOLTIP)
-    tooltip_manager_.reset(new views::TooltipManagerAura(GetWidget()));
-
-  if (params.type != Widget::InitParams::TYPE_TOOLTIP &&
-      params.type != Widget::InitParams::TYPE_POPUP) {
-    aura::client::SetDragDropDelegate(window_, this);
-  }
-
-  aura::client::SetActivationDelegate(window_, this);
-
-  host_->window()->AddChild(window_);
-  window_reorderer_.reset(
-      new WindowReorderer(window_, GetWidget()->GetRootView()));
-
-  // TODO(bshe): figure out how to add cursor manager, drag drop client and all
-  // the necessary parts that exists in desktop_native_widget_aura.
-}
-
-void NativeWidgetAndroid::OnWidgetInitDone() {}
-
-NonClientFrameView* NativeWidgetAndroid::CreateNonClientFrameView() {
-  NOTIMPLEMENTED();
-  return nullptr;
-}
-
-bool NativeWidgetAndroid::ShouldUseNativeFrame() const {
-  // There is only one frame type for aura.
-  return false;
-}
-
-bool NativeWidgetAndroid::ShouldWindowContentsBeTransparent() const {
-  NOTIMPLEMENTED();
-  return false;
-}
-
-void NativeWidgetAndroid::FrameTypeChanged() {
-  NOTIMPLEMENTED();
-}
-
-Widget* NativeWidgetAndroid::GetWidget() {
-  return delegate_->AsWidget();
-}
-
-const Widget* NativeWidgetAndroid::GetWidget() const {
-  return delegate_->AsWidget();
-}
-
-gfx::NativeView NativeWidgetAndroid::GetNativeView() const {
-  return window_;
-}
-
-gfx::NativeWindow NativeWidgetAndroid::GetNativeWindow() const {
-  return window_;
-}
-
-Widget* NativeWidgetAndroid::GetTopLevelWidget() {
-  return GetWidget();
-}
-
-const ui::Compositor* NativeWidgetAndroid::GetCompositor() const {
-  return host_->compositor();
-}
-
-const ui::Layer* NativeWidgetAndroid::GetLayer() const {
-  return GetNativeWindow()->layer();
-}
-
-void NativeWidgetAndroid::ReorderNativeViews() {
-  window_reorderer_->ReorderChildWindows();
-}
-
-void NativeWidgetAndroid::ViewRemoved(View* view) {
-  // TODO(bshe): Implement drag and drop. crbug.com/554029.
-  NOTIMPLEMENTED();
-}
-
-void NativeWidgetAndroid::SetNativeWindowProperty(const char* name,
-                                                  void* value) {
-  GetNativeWindow()->SetNativeWindowProperty(name, value);
-}
-
-void* NativeWidgetAndroid::GetNativeWindowProperty(const char* name) const {
-  return GetNativeWindow()->GetNativeWindowProperty(name);
-}
-
-TooltipManager* NativeWidgetAndroid::GetTooltipManager() const {
-  return tooltip_manager_.get();
-}
-
-void NativeWidgetAndroid::SetCapture() {
-  GetNativeWindow()->SetCapture();
-}
-
-void NativeWidgetAndroid::ReleaseCapture() {
-  GetNativeWindow()->ReleaseCapture();
-}
-
-bool NativeWidgetAndroid::HasCapture() const {
-  return GetNativeWindow()->HasCapture();
-}
-
-ui::InputMethod* NativeWidgetAndroid::GetInputMethod() {
-  return host_->GetInputMethod();
-}
-
-void NativeWidgetAndroid::CenterWindow(const gfx::Size& size) {
-  // TODO(bshe): Implement this. See crbug.com/554208.
-  NOTIMPLEMENTED();
-}
-
-void NativeWidgetAndroid::GetWindowPlacement(
-    gfx::Rect* bounds,
-    ui::WindowShowState* show_state) const {
-  // TODO(bshe): Implement this. See crbug.com/554208.
-  NOTIMPLEMENTED();
-}
-
-bool NativeWidgetAndroid::SetWindowTitle(const base::string16& title) {
-  if (GetNativeWindow()->title() == title)
-    return false;
-  GetNativeWindow()->SetTitle(title);
-  return true;
-}
-
-void NativeWidgetAndroid::SetWindowIcons(const gfx::ImageSkia& window_icon,
-                                         const gfx::ImageSkia& app_icon) {
-  // TODO(bshe): Implement this. See crbug.com/554953.
-  NOTIMPLEMENTED();
-}
-
-void NativeWidgetAndroid::InitModalType(ui::ModalType modal_type) {
-  // TODO(bshe): Implement this. See crbug.com/554208.
-  NOTIMPLEMENTED();
-}
-
-gfx::Rect NativeWidgetAndroid::GetWindowBoundsInScreen() const {
-  return GetNativeWindow()->GetBoundsInScreen();
-}
-
-gfx::Rect NativeWidgetAndroid::GetClientAreaBoundsInScreen() const {
-  // View-to-screen coordinate system transformations depend on this returning
-  // the full window bounds, for example View::ConvertPointToScreen().
-  return GetNativeWindow()->GetBoundsInScreen();
-}
-
-gfx::Rect NativeWidgetAndroid::GetRestoredBounds() const {
-  // TODO(bshe): Implement this. See crbug.com/554208.
-  NOTIMPLEMENTED();
-  return gfx::Rect();
-}
-
-void NativeWidgetAndroid::SetBounds(const gfx::Rect& bounds) {
-  // TODO(bshe): This may not work. We may need to resize SurfaceView too. See
-  // crbug.com/554952.
-  host_->SetBounds(bounds);
-}
-
-void NativeWidgetAndroid::SetSize(const gfx::Size& size) {
-  gfx::Rect bounds = host_->GetBounds();
-  SetBounds(gfx::Rect(bounds.origin(), size));
-}
-
-void NativeWidgetAndroid::StackAbove(gfx::NativeView native_view) {
-  // TODO(bshe): Implements window stacking logic. See crbug.com/554047
-  NOTIMPLEMENTED();
-}
-
-void NativeWidgetAndroid::StackAtTop() {
-  // TODO(bshe): Implements window stacking logic. See crbug.com/554047
-  NOTIMPLEMENTED();
-}
-
-void NativeWidgetAndroid::StackBelow(gfx::NativeView native_view) {
-  // TODO(bshe): Implements window stacking logic. See crbug.com/554047
-  NOTIMPLEMENTED();
-}
-
-void NativeWidgetAndroid::SetShape(SkRegion* region) {
-  GetNativeWindow()->layer()->SetAlphaShape(make_scoped_ptr(region));
-}
-
-void NativeWidgetAndroid::Close() {
-  // TODO(bshe): This might not be right. See crbug.com/554259.
-  DCHECK(ownership_ == Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET);
-  GetNativeWindow()->SuppressPaint();
-  Hide();
-  GetNativeWindow()->SetProperty(aura::client::kModalKey, ui::MODAL_TYPE_NONE);
-
-  if (!close_widget_factory_.HasWeakPtrs()) {
-    base::MessageLoop::current()->PostTask(
-        FROM_HERE, base::Bind(&NativeWidgetAndroid::CloseNow,
-                              close_widget_factory_.GetWeakPtr()));
-  }
-}
-
-void NativeWidgetAndroid::CloseNow() {
-  // TODO(bshe): This might not be right. See crbug.com/554259.
-  host_->RemoveObserver(this);
-  host_.reset();
-  delete window_;
-}
-
-void NativeWidgetAndroid::Show() {
-  host_->Show();
-  GetNativeWindow()->Show();
-}
-
-void NativeWidgetAndroid::Hide() {
-  host_->Hide();
-  GetNativeWindow()->Hide();
-}
-
-void NativeWidgetAndroid::ShowMaximizedWithBounds(
-    const gfx::Rect& restored_bounds) {
-  NOTIMPLEMENTED();
-}
-
-void NativeWidgetAndroid::ShowWithWindowState(ui::WindowShowState state) {
-  NOTIMPLEMENTED();
-}
-
-bool NativeWidgetAndroid::IsVisible() const {
-  return GetNativeWindow()->IsVisible();
-}
-
-void NativeWidgetAndroid::Activate() {
-  aura::client::GetActivationClient(host_->window())
-      ->ActivateWindow(GetNativeWindow());
-}
-
-void NativeWidgetAndroid::Deactivate() {
-  aura::client::GetActivationClient(host_->window())
-      ->DeactivateWindow(GetNativeWindow());
-}
-
-bool NativeWidgetAndroid::IsActive() const {
-  return wm::IsActiveWindow(GetNativeWindow());
-}
-
-void NativeWidgetAndroid::SetAlwaysOnTop(bool on_top) {
-  GetNativeWindow()->SetProperty(aura::client::kAlwaysOnTopKey, on_top);
-}
-
-bool NativeWidgetAndroid::IsAlwaysOnTop() const {
-  return GetNativeWindow()->GetProperty(aura::client::kAlwaysOnTopKey);
-}
-
-void NativeWidgetAndroid::SetVisibleOnAllWorkspaces(bool always_visible) {
-  // TODO(bshe): Implement this. See crbug.com/554208.
-  NOTIMPLEMENTED();
-}
-
-void NativeWidgetAndroid::Maximize() {
-  // TODO(bshe): Implement this. See crbug.com/554208.
-  NOTIMPLEMENTED();
-}
-
-void NativeWidgetAndroid::Minimize() {
-  // TODO(bshe): Implement this. See crbug.com/554208.
-  NOTIMPLEMENTED();
-}
-
-bool NativeWidgetAndroid::IsMaximized() const {
-  // TODO(bshe): Implement this. See crbug.com/554208.
-  NOTIMPLEMENTED();
-  return false;
-}
-
-bool NativeWidgetAndroid::IsMinimized() const {
-  // TODO(bshe): Implement this. See crbug.com/554208.
-  NOTIMPLEMENTED();
-  return false;
-}
-
-void NativeWidgetAndroid::Restore() {
-  // TODO(bshe): Implement this. See crbug.com/554208.
-  NOTIMPLEMENTED();
-}
-
-void NativeWidgetAndroid::SetFullscreen(bool fullscreen) {
-  // TODO(bshe): Implement this. See crbug.com/554208.
-  NOTIMPLEMENTED();
-}
-
-bool NativeWidgetAndroid::IsFullscreen() const {
-  // TODO(bshe): Implement this. See crbug.com/554208.
-  NOTIMPLEMENTED();
-  return false;
-}
-
-void NativeWidgetAndroid::SetOpacity(unsigned char opacity) {
-  GetNativeWindow()->layer()->SetOpacity(opacity / 255.0);
-}
-
-void NativeWidgetAndroid::SetUseDragFrame(bool use_drag_frame) {
-  NOTIMPLEMENTED();
-}
-
-void NativeWidgetAndroid::FlashFrame(bool flash) {
-  NOTIMPLEMENTED();
-}
-
-void NativeWidgetAndroid::RunShellDrag(
-    View* view,
-    const ui::OSExchangeData& data,
-    const gfx::Point& location,
-    int operation,
-    ui::DragDropTypes::DragEventSource source) {
-  NOTIMPLEMENTED();
-}
-
-void NativeWidgetAndroid::SchedulePaintInRect(const gfx::Rect& rect) {
-  GetNativeWindow()->SchedulePaintInRect(rect);
-}
-
-void NativeWidgetAndroid::SetCursor(gfx::NativeCursor cursor) {
-  cursor_ = cursor;
-  aura::client::CursorClient* cursor_client =
-      aura::client::GetCursorClient(host_->window());
-  if (cursor_client)
-    cursor_client->SetCursor(cursor);
-}
-
-bool NativeWidgetAndroid::IsMouseEventsEnabled() const {
-  aura::client::CursorClient* cursor_client =
-      aura::client::GetCursorClient(host_->window());
-  return cursor_client ? cursor_client->IsMouseEventsEnabled() : true;
-}
-
-void NativeWidgetAndroid::ClearNativeFocus() {
-  aura::client::FocusClient* client = aura::client::GetFocusClient(window_);
-  if (client && window_->Contains(client->GetFocusedWindow()))
-    client->ResetFocusWithinActiveWindow(window_);
-}
-
-gfx::Rect NativeWidgetAndroid::GetWorkAreaBoundsInScreen() const {
-  return gfx::Screen::GetScreenFor(window_)
-      ->GetDisplayNearestWindow(window_)
-      .work_area();
-}
-
-Widget::MoveLoopResult NativeWidgetAndroid::RunMoveLoop(
-    const gfx::Vector2d& drag_offset,
-    Widget::MoveLoopSource source,
-    Widget::MoveLoopEscapeBehavior escape_behavior) {
-  // TODO(bshe): Implement this. See crbug.com/554208.
-  NOTIMPLEMENTED();
-  return Widget::MOVE_LOOP_SUCCESSFUL;
-}
-
-void NativeWidgetAndroid::EndMoveLoop() {
-  // TODO(bshe): Implement this. See crbug.com/554208.
-  NOTIMPLEMENTED();
-}
-
-void NativeWidgetAndroid::SetVisibilityChangedAnimationsEnabled(bool value) {
-  GetNativeWindow()->SetProperty(aura::client::kAnimationsDisabledKey, !value);
-}
-
-void NativeWidgetAndroid::SetVisibilityAnimationDuration(
-    const base::TimeDelta& duration) {
-  wm::SetWindowVisibilityAnimationDuration(GetNativeWindow(), duration);
-}
-
-void NativeWidgetAndroid::SetVisibilityAnimationTransition(
-    Widget::VisibilityTransition transition) {
-  wm::WindowVisibilityAnimationTransition wm_transition = wm::ANIMATE_NONE;
-  switch (transition) {
-    case Widget::ANIMATE_SHOW:
-      wm_transition = wm::ANIMATE_SHOW;
-      break;
-    case Widget::ANIMATE_HIDE:
-      wm_transition = wm::ANIMATE_HIDE;
-      break;
-    case Widget::ANIMATE_BOTH:
-      wm_transition = wm::ANIMATE_BOTH;
-      break;
-    case Widget::ANIMATE_NONE:
-      wm_transition = wm::ANIMATE_NONE;
-      break;
-  }
-  wm::SetWindowVisibilityAnimationTransition(GetNativeWindow(), wm_transition);
-}
-
-ui::NativeTheme* NativeWidgetAndroid::GetNativeTheme() const {
-  return ui::NativeThemeAura::instance();
-}
-
-void NativeWidgetAndroid::OnRootViewLayout() {
-  NOTIMPLEMENTED();
-}
-
-bool NativeWidgetAndroid::IsTranslucentWindowOpacitySupported() const {
-  return true;
-}
-
-void NativeWidgetAndroid::OnSizeConstraintsChanged() {
-  window_->SetProperty(aura::client::kCanMaximizeKey,
-                       GetWidget()->widget_delegate()->CanMaximize());
-  window_->SetProperty(aura::client::kCanMinimizeKey,
-                       GetWidget()->widget_delegate()->CanMinimize());
-  window_->SetProperty(aura::client::kCanResizeKey,
-                       GetWidget()->widget_delegate()->CanResize());
-}
-
-void NativeWidgetAndroid::RepostNativeEvent(gfx::NativeEvent native_event) {
-  OnEvent(native_event);
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// NativeWidgetAndroid, aura::WindowDelegate implementation:
-
-gfx::Size NativeWidgetAndroid::GetMinimumSize() const {
-  return delegate_->GetMinimumSize();
-}
-
-gfx::Size NativeWidgetAndroid::GetMaximumSize() const {
-  // If a window have a maximum size, the window should not be
-  // maximizable.
-  DCHECK(delegate_->GetMaximumSize().IsEmpty() ||
-         !window_->GetProperty(aura::client::kCanMaximizeKey));
-  return delegate_->GetMaximumSize();
-}
-
-void NativeWidgetAndroid::OnBoundsChanged(const gfx::Rect& old_bounds,
-                                          const gfx::Rect& new_bounds) {
-  // Assume that if the old bounds was completely empty a move happened. This
-  // handles the case of a maximize animation acquiring the layer (acquiring a
-  // layer results in clearing the bounds).
-  if (old_bounds.origin() != new_bounds.origin() ||
-      (old_bounds == gfx::Rect(0, 0, 0, 0) && !new_bounds.IsEmpty())) {
-    delegate_->OnNativeWidgetMove();
-  }
-  if (old_bounds.size() != new_bounds.size())
-    delegate_->OnNativeWidgetSizeChanged(new_bounds.size());
-}
-
-gfx::NativeCursor NativeWidgetAndroid::GetCursor(const gfx::Point& point) {
-  return cursor_;
-}
-
-int NativeWidgetAndroid::GetNonClientComponent(const gfx::Point& point) const {
-  return delegate_->GetNonClientComponent(point);
-}
-
-bool NativeWidgetAndroid::ShouldDescendIntoChildForEventHandling(
-    aura::Window* child,
-    const gfx::Point& location) {
-  views::WidgetDelegate* widget_delegate = GetWidget()->widget_delegate();
-  if (widget_delegate &&
-      !widget_delegate->ShouldDescendIntoChildForEventHandling(child, location))
-    return false;
-
-  // Don't descend into |child| if there is a view with a Layer that contains
-  // the point and is stacked above |child|s layer.
-  typedef std::vector<ui::Layer*> Layers;
-  const Layers& root_layers(delegate_->GetRootLayers());
-  if (root_layers.empty())
-    return true;
-
-  Layers::const_iterator child_layer_iter(
-      std::find(window_->layer()->children().begin(),
-                window_->layer()->children().end(), child->layer()));
-  if (child_layer_iter == window_->layer()->children().end())
-    return true;
-
-  for (std::vector<ui::Layer*>::const_reverse_iterator i = root_layers.rbegin();
-       i != root_layers.rend(); ++i) {
-    ui::Layer* layer = *i;
-    if (layer->visible() && layer->bounds().Contains(location)) {
-      Layers::const_iterator root_layer_iter(
-          std::find(window_->layer()->children().begin(),
-                    window_->layer()->children().end(), layer));
-      if (root_layer_iter > child_layer_iter)
-        return false;
-    }
-  }
-  return true;
-}
-
-bool NativeWidgetAndroid::CanFocus() {
-  return ShouldActivate();
-}
-
-void NativeWidgetAndroid::OnCaptureLost() {
-  delegate_->OnMouseCaptureLost();
-}
-
-void NativeWidgetAndroid::OnPaint(const ui::PaintContext& context) {
-  delegate_->OnNativeWidgetPaint(context);
-}
-
-void NativeWidgetAndroid::OnDeviceScaleFactorChanged(
-    float device_scale_factor) {
-  GetWidget()->DeviceScaleFactorChanged(device_scale_factor);
-}
-
-void NativeWidgetAndroid::OnWindowDestroying(aura::Window* window) {
-  delegate_->OnNativeWidgetDestroying();
-
-  // If the aura::Window is destroyed, we can no longer show tooltips.
-  tooltip_manager_.reset();
-}
-
-void NativeWidgetAndroid::OnWindowDestroyed(aura::Window* window) {
-  window_ = nullptr;
-  delegate_->OnNativeWidgetDestroyed();
-  if (ownership_ == Widget::InitParams::NATIVE_WIDGET_OWNS_WIDGET)
-    delete this;
-}
-
-void NativeWidgetAndroid::OnWindowTargetVisibilityChanged(bool visible) {
-  delegate_->OnNativeWidgetVisibilityChanged(visible);
-}
-
-bool NativeWidgetAndroid::HasHitTestMask() const {
-  return delegate_->HasHitTestMask();
-}
-
-void NativeWidgetAndroid::GetHitTestMask(gfx::Path* mask) const {
-  DCHECK(mask);
-  delegate_->GetHitTestMask(mask);
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// NativeWidgetAndroid, ui::EventHandler implementation:
-
-void NativeWidgetAndroid::OnKeyEvent(ui::KeyEvent* event) {
-  DCHECK(window_);
-  // Renderer may send a key event back to us if the key event wasn't handled,
-  // and the window may be invisible by that time.
-  if (!window_->IsVisible())
-    return;
-
-  FocusManager* focus_manager = GetWidget()->GetFocusManager();
-  delegate_->OnKeyEvent(event);
-  if (!event->handled() && focus_manager)
-    focus_manager->OnKeyEvent(*event);
-  event->SetHandled();
-}
-
-void NativeWidgetAndroid::OnMouseEvent(ui::MouseEvent* event) {
-  DCHECK(window_);
-  DCHECK(window_->IsVisible());
-  if (event->type() == ui::ET_MOUSEWHEEL) {
-    delegate_->OnMouseEvent(event);
-    if (event->handled())
-      return;
-  }
-
-  if (tooltip_manager_.get())
-    tooltip_manager_->UpdateTooltip();
-  TooltipManagerAura::UpdateTooltipManagerForCapture(GetWidget());
-  delegate_->OnMouseEvent(event);
-}
-
-void NativeWidgetAndroid::OnScrollEvent(ui::ScrollEvent* event) {
-  delegate_->OnScrollEvent(event);
-}
-
-void NativeWidgetAndroid::OnGestureEvent(ui::GestureEvent* event) {
-  DCHECK(window_);
-  DCHECK(window_->IsVisible() || event->IsEndingEvent());
-  delegate_->OnGestureEvent(event);
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// NativeWidgetAndroid, aura::client::ActivationDelegate implementation:
-
-bool NativeWidgetAndroid::ShouldActivate() const {
-  return delegate_->CanActivate();
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// NativeWidgetAndroid, aura::client::ActivationChangeObserver
-// implementation:
-
-void NativeWidgetAndroid::OnWindowActivated(
-    aura::client::ActivationChangeObserver::ActivationReason,
-    aura::Window* gained_active,
-    aura::Window* lost_active) {
-  DCHECK(window_ == gained_active || window_ == lost_active);
-  if (GetWidget()->GetFocusManager()) {
-    if (window_ == gained_active)
-      GetWidget()->GetFocusManager()->RestoreFocusedView();
-    else if (window_ == lost_active)
-      GetWidget()->GetFocusManager()->StoreFocusedView(true);
-  }
-  delegate_->OnNativeWidgetActivationChanged(window_ == gained_active);
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// NativeWidgetAndroid, aura::client::FocusChangeObserver:
-
-void NativeWidgetAndroid::OnWindowFocused(aura::Window* gained_focus,
-                                          aura::Window* lost_focus) {
-  if (window_ == gained_focus)
-    delegate_->OnNativeFocus();
-  else if (window_ == lost_focus)
-    delegate_->OnNativeBlur();
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// NativeWidgetAndroid, aura::WindowDragDropDelegate implementation:
-
-void NativeWidgetAndroid::OnDragEntered(const ui::DropTargetEvent& event) {
-  // TODO: Implement drag and drop. crbug.com/554029.
-  NOTIMPLEMENTED();
-}
-
-int NativeWidgetAndroid::OnDragUpdated(const ui::DropTargetEvent& event) {
-  // TODO: Implement drag and drop. crbug.com/554029.
-  NOTIMPLEMENTED();
-  return 0;
-}
-
-void NativeWidgetAndroid::OnDragExited() {
-  // TODO: Implement drag and drop. crbug.com/554029.
-  NOTIMPLEMENTED();
-}
-
-int NativeWidgetAndroid::OnPerformDrop(const ui::DropTargetEvent& event) {
-  // TODO: Implement drag and drop. crbug.com/554029.
-  NOTIMPLEMENTED();
-  return 0;
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// NativeWidgetAndroid, aura::WindowTreeHostObserver implementation:
-
-void NativeWidgetAndroid::OnHostCloseRequested(
-    const aura::WindowTreeHost* host) {
-  GetWidget()->Close();
-}
-
-void NativeWidgetAndroid::OnHostResized(const aura::WindowTreeHost* host) {
-  gfx::Rect new_bounds = gfx::Rect(host_->window()->bounds().size());
-  GetNativeWindow()->SetBounds(new_bounds);
-  delegate_->OnNativeWidgetSizeChanged(new_bounds.size());
-}
-
-void NativeWidgetAndroid::OnHostMoved(const aura::WindowTreeHost* host,
-                                      const gfx::Point& new_origin) {
-  TRACE_EVENT1("views", "NativeWidgetAndroid::OnHostMoved", "new_origin",
-               new_origin.ToString());
-
-  delegate_->OnNativeWidgetMove();
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// NativeWidgetAndroid, protected:
-
-NativeWidgetAndroid::~NativeWidgetAndroid() {
-  destroying_ = true;
-  if (ownership_ == Widget::InitParams::NATIVE_WIDGET_OWNS_WIDGET)
-    delete delegate_;
-  else
-    CloseNow();
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// NativeWidgetAndroid, private:
-
-bool NativeWidgetAndroid::IsDocked() const {
-  NOTIMPLEMENTED();
-  return false;
-}
-
-void NativeWidgetAndroid::SetInitialFocus(ui::WindowShowState show_state) {
-  // The window does not get keyboard messages unless we focus it.
-  if (!GetWidget()->SetInitialFocus(show_state))
-    window_->Focus();
-}
-
-}  // namespace views