[Refactor] Move the non-browser specific logic of ImmersiveModeControllerAsh into ash part 2

ash/wm/immersive_fullscreen_controller.cc

Index: ash/wm/immersive_fullscreen_controller.cc
diff --git a/chrome/browser/ui/views/frame/immersive_mode_controller_ash.cc b/ash/wm/immersive_fullscreen_controller.cc
similarity index 62%
copy from chrome/browser/ui/views/frame/immersive_mode_controller_ash.cc
copy to ash/wm/immersive_fullscreen_controller.cc
index ea8475bf19ac70d4550bab24556f267ced20a16a..ee17674fb6965d1cc9d96b214a62a1f19ad2535e 100644
--- a/chrome/browser/ui/views/frame/immersive_mode_controller_ash.cc
+++ b/ash/wm/immersive_fullscreen_controller.cc
@@ -2,20 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chrome/browser/ui/views/frame/immersive_mode_controller_ash.h"
+#include "ash/wm/immersive_fullscreen_controller.h"
 
 #include <set>
-#include <vector>
 
 #include "ash/shell.h"
 #include "ash/wm/window_state.h"
-#include "chrome/browser/chrome_notification_types.h"
-#include "chrome/browser/ui/fullscreen/fullscreen_controller.h"
-#include "chrome/browser/ui/views/bookmarks/bookmark_bar_view.h"
-#include "chrome/browser/ui/views/frame/top_container_view.h"
-#include "content/public/browser/notification_service.h"
-#include "content/public/browser/web_contents.h"
-#include "content/public/browser/web_contents_view.h"
 #include "ui/aura/client/activation_client.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/client/capture_client.h"
@@ -25,19 +17,19 @@
 #include "ui/aura/root_window.h"
 #include "ui/aura/window.h"
 #include "ui/gfx/animation/slide_animation.h"
+#include "ui/gfx/display.h"
+#include "ui/gfx/point.h"
+#include "ui/gfx/rect.h"
+#include "ui/gfx/screen.h"
 #include "ui/views/bubble/bubble_delegate.h"
 #include "ui/views/view.h"
 #include "ui/views/widget/widget.h"
-#include "ui/views/window/non_client_view.h"
 
 using views::View;
 
-namespace {
+namespace ash {
 
-// The slide open/closed animation looks better if it starts and ends just a
-// few pixels before the view goes completely off the screen, which reduces
-// the visual "pop" as the 2-pixel tall immersive-style tabs become visible.
-const int kAnimationOffsetY = 3;
+namespace {
 
 // Duration for the reveal show/hide slide animation. The slower duration is
 // used for the initial slide out to give the user more change to see what
@@ -112,27 +104,10 @@ gfx::Point GetEventLocationInScreen(const ui::LocatedEvent& event) {
   return location_in_screen;
 }
 
-////////////////////////////////////////////////////////////////////////////////
-
-class RevealedLockAsh : public ImmersiveRevealedLock {
- public:
-  RevealedLockAsh(const base::WeakPtr<ImmersiveModeControllerAsh>& controller,
-                  ImmersiveModeController::AnimateReveal animate_reveal)
-      : controller_(controller) {
-    DCHECK(controller_);
-    controller_->LockRevealedState(animate_reveal);
-  }
-
-  virtual ~RevealedLockAsh() {
-    if (controller_)
-      controller_->UnlockRevealedState();
-  }
-
- private:
-  base::WeakPtr<ImmersiveModeControllerAsh> controller_;
-
-  DISALLOW_COPY_AND_ASSIGN(RevealedLockAsh);
-};
+// Returns the bounds of the display nearest to |window| in screen coordinates.
+gfx::Rect GetDisplayBoundsInScreen(aura::Window* window) {
+  return Shell::GetScreen()->GetDisplayNearestWindow(window).bounds();
+}
 
 }  // namespace
 
@@ -141,14 +116,15 @@ class RevealedLockAsh : public ImmersiveRevealedLock {
 // Class which keeps the top-of-window views revealed as long as one of the
 // bubbles it is observing is visible. The logic to keep the top-of-window
 // views revealed based on the visibility of bubbles anchored to
-// children of |ImmersiveModeController::top_container_| is separate from
-// the logic related to |ImmersiveModeControllerAsh::focus_revealed_lock_|
+// children of |ImmersiveFullscreenController::top_container_| is separate from
+// the logic related to |ImmersiveFullscreenController::focus_revealed_lock_|
 // so that bubbles which are not activatable and bubbles which do not close
 // upon deactivation also keep the top-of-window views revealed for the
 // duration of their visibility.
-class ImmersiveModeControllerAsh::BubbleManager : public aura::WindowObserver {
+class ImmersiveFullscreenController::BubbleManager
+    : public aura::WindowObserver {
  public:
-  explicit BubbleManager(ImmersiveModeControllerAsh* controller);
+  explicit BubbleManager(ImmersiveFullscreenController* controller);
   virtual ~BubbleManager();
 
   // Start / stop observing changes to |bubble|'s visibility.
@@ -164,7 +140,7 @@ class ImmersiveModeControllerAsh::BubbleManager : public aura::WindowObserver {
                                          bool visible) OVERRIDE;
   virtual void OnWindowDestroying(aura::Window* window) OVERRIDE;
 
-  ImmersiveModeControllerAsh* controller_;
+  ImmersiveFullscreenController* controller_;
 
   std::set<aura::Window*> bubbles_;
 
@@ -175,19 +151,19 @@ class ImmersiveModeControllerAsh::BubbleManager : public aura::WindowObserver {
   DISALLOW_COPY_AND_ASSIGN(BubbleManager);
 };
 
-ImmersiveModeControllerAsh::BubbleManager::BubbleManager(
-    ImmersiveModeControllerAsh* controller)
+ImmersiveFullscreenController::BubbleManager::BubbleManager(
+    ImmersiveFullscreenController* controller)
     : controller_(controller) {
 }
 
-ImmersiveModeControllerAsh::BubbleManager::~BubbleManager() {
+ImmersiveFullscreenController::BubbleManager::~BubbleManager() {
   for (std::set<aura::Window*>::const_iterator it = bubbles_.begin();
        it != bubbles_.end(); ++it) {
     (*it)->RemoveObserver(this);
   }
 }
 
-void ImmersiveModeControllerAsh::BubbleManager::StartObserving(
+void ImmersiveFullscreenController::BubbleManager::StartObserving(
     aura::Window* bubble) {
   if (bubbles_.insert(bubble).second) {
     bubble->AddObserver(this);
@@ -195,7 +171,7 @@ void ImmersiveModeControllerAsh::BubbleManager::StartObserving(
   }
 }
 
-void ImmersiveModeControllerAsh::BubbleManager::StopObserving(
+void ImmersiveFullscreenController::BubbleManager::StopObserving(
     aura::Window* bubble) {
   if (bubbles_.erase(bubble)) {
     bubble->RemoveObserver(this);
@@ -203,7 +179,7 @@ void ImmersiveModeControllerAsh::BubbleManager::StopObserving(
   }
 }
 
-void ImmersiveModeControllerAsh::BubbleManager::UpdateRevealedLock() {
+void ImmersiveFullscreenController::BubbleManager::UpdateRevealedLock() {
   bool has_visible_bubble = false;
   for (std::set<aura::Window*>::const_iterator it = bubbles_.begin();
        it != bubbles_.end(); ++it) {
@@ -220,7 +196,7 @@ void ImmersiveModeControllerAsh::BubbleManager::UpdateRevealedLock() {
       // weird for the top-of-window views to animate and the bubble not to
       // animate along with the top-of-window views.
       revealed_lock_.reset(controller_->GetRevealedLock(
-          ImmersiveModeController::ANIMATE_REVEAL_NO));
+          ImmersiveFullscreenController::ANIMATE_REVEAL_NO));
     }
   } else {
     revealed_lock_.reset();
@@ -239,81 +215,58 @@ void ImmersiveModeControllerAsh::BubbleManager::UpdateRevealedLock() {
   }
 }
 
-void ImmersiveModeControllerAsh::BubbleManager::OnWindowVisibilityChanged(
+void ImmersiveFullscreenController::BubbleManager::OnWindowVisibilityChanged(
     aura::Window*,
     bool visible) {
   UpdateRevealedLock();
 }
 
-void ImmersiveModeControllerAsh::BubbleManager::OnWindowDestroying(
+void ImmersiveFullscreenController::BubbleManager::OnWindowDestroying(
     aura::Window* window) {
   StopObserving(window);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 
-ImmersiveModeControllerAsh::ImmersiveModeControllerAsh()
+ImmersiveFullscreenController::ImmersiveFullscreenController()
     : delegate_(NULL),
-      widget_(NULL),
       top_container_(NULL),
+      widget_(NULL),
+      native_window_(NULL),
       observers_enabled_(false),
       enabled_(false),
       reveal_state_(CLOSED),
       revealed_lock_count_(0),
-      tab_indicator_visibility_(TAB_INDICATORS_HIDE),
       mouse_x_when_hit_top_in_screen_(-1),
       gesture_begun_(false),
-      native_window_(NULL),
       animation_(new gfx::SlideAnimation(this)),
       animations_disabled_for_test_(false),
       weak_ptr_factory_(this) {
 }
 
-ImmersiveModeControllerAsh::~ImmersiveModeControllerAsh() {
-  // The browser view is being destroyed so there's no need to update its
-  // layout or layers, even if the top views are revealed. But the window
-  // observers still need to be removed.
+ImmersiveFullscreenController::~ImmersiveFullscreenController() {
   EnableWindowObservers(false);
 }
 
-void ImmersiveModeControllerAsh::LockRevealedState(
-      AnimateReveal animate_reveal) {
-  ++revealed_lock_count_;
-  Animate animate = (animate_reveal == ANIMATE_REVEAL_YES) ?
-      ANIMATE_FAST : ANIMATE_NO;
-  MaybeStartReveal(animate);
-}
-
-void ImmersiveModeControllerAsh::UnlockRevealedState() {
-  --revealed_lock_count_;
-  DCHECK_GE(revealed_lock_count_, 0);
-  if (revealed_lock_count_ == 0) {
-    // Always animate ending the reveal fast.
-    MaybeEndReveal(ANIMATE_FAST);
-  }
-}
-
-void ImmersiveModeControllerAsh::Init(
-    Delegate* delegate,
-    views::Widget* widget,
-    views::View* top_container) {
+void ImmersiveFullscreenController::Init(Delegate* delegate,
+                                         views::Widget* widget,
+                                         views::View* top_container) {
   delegate_ = delegate;
+  top_container_ = top_container;
   widget_ = widget;
-  // Browser view is detached from its widget during destruction. Cache the
-  // window pointer so |this| can stop observing during destruction.
   native_window_ = widget_->GetNativeWindow();
-  top_container_ = top_container;
 }
 
-void ImmersiveModeControllerAsh::SetEnabled(bool enabled) {
-  DCHECK(native_window_) << "Must initialize before enabling";
+void ImmersiveFullscreenController::SetEnabled(bool enabled) {
   if (enabled_ == enabled)
     return;
   enabled_ = enabled;
 
   EnableWindowObservers(enabled_);
 
-  UpdateUseMinimalChrome(LAYOUT_NO);
+  // Auto hide the shelf in immersive fullscreen instead of hiding it.
+  wm::GetWindowState(native_window_)->set_hide_shelf_when_fullscreen(!enabled);
+  Shell::GetInstance()->UpdateShelfVisibility();
 
   if (enabled_) {
     // Animate enabling immersive mode by sliding out the top-of-window views.
@@ -321,8 +274,7 @@ void ImmersiveModeControllerAsh::SetEnabled(bool enabled) {
 
     // Do a reveal to set the initial state for the animation. (And any
     // required state in case the animation cannot run because of a lock holding
-    // the top-of-window views open.) This call has the side effect of relaying
-    // out |browser_view_|'s root view.
+    // the top-of-window views open.)
     MaybeStartReveal(ANIMATE_NO);
 
     // Reset the located event and the focus revealed locks so that they do not
@@ -341,78 +293,52 @@ void ImmersiveModeControllerAsh::SetEnabled(bool enabled) {
   } else {
     // Stop cursor-at-top tracking.
     top_edge_hover_timer_.Stop();
-    // Snap immediately to the closed state.
     reveal_state_ = CLOSED;
-    top_container_->SetPaintToLayer(false);
-    delegate_->SetImmersiveStyle(false);
-    SetRenderWindowTopInsetsForTouch(0);
 
-    // Layout the root view so that incognito avatar icon, if any, gets laid
-    // out.
-    LayoutBrowserRootView();
+    delegate_->OnImmersiveFullscreenExited();
   }
 }
 
-bool ImmersiveModeControllerAsh::IsEnabled() const {
+bool ImmersiveFullscreenController::IsEnabled() const {
   return enabled_;
 }
 
-bool ImmersiveModeControllerAsh::ShouldHideTabIndicators() const {
-  return tab_indicator_visibility_ != TAB_INDICATORS_SHOW;
-}
-
-bool ImmersiveModeControllerAsh::ShouldHideTopViews() const {
-  return enabled_ && reveal_state_ == CLOSED;
-}
-
-bool ImmersiveModeControllerAsh::IsRevealed() const {
+bool ImmersiveFullscreenController::IsRevealed() const {
   return enabled_ && reveal_state_ != CLOSED;
 }
 
-int ImmersiveModeControllerAsh::GetTopContainerVerticalOffset(
-    const gfx::Size& top_container_size) const {
-  if (!enabled_ || reveal_state_ == REVEALED || reveal_state_ == CLOSED)
-    return 0;
-
-  return animation_->CurrentValueBetween(
-      -top_container_size.height() + kAnimationOffsetY, 0);
-}
-
-ImmersiveRevealedLock* ImmersiveModeControllerAsh::GetRevealedLock(
+ImmersiveRevealedLock* ImmersiveFullscreenController::GetRevealedLock(
     AnimateReveal animate_reveal) {
-  return new RevealedLockAsh(weak_ptr_factory_.GetWeakPtr(), animate_reveal);
+  return new ImmersiveRevealedLock(weak_ptr_factory_.GetWeakPtr(),
+                                   animate_reveal);
 }
 
-void ImmersiveModeControllerAsh::OnFindBarVisibleBoundsChanged(
-    const gfx::Rect& new_visible_bounds_in_screen) {
-  find_bar_visible_bounds_in_screen_ = new_visible_bounds_in_screen;
-}
+////////////////////////////////////////////////////////////////////////////////
+// Testing interface:
 
-void ImmersiveModeControllerAsh::SetupForTest() {
+void ImmersiveFullscreenController::SetupForTest() {
   DCHECK(!enabled_);
   animations_disabled_for_test_ = true;
 
-  // Move the mouse off of the top-of-window views so that it does not keep
-  // the top-of-window views revealed.
-  gfx::Point cursor_pos(0, top_container_->bounds().bottom() + 100);
-  views::View::ConvertPointToScreen(top_container_, &cursor_pos);
+  // Move the mouse off of the top-of-window views so that it does not keep the
+  // top-of-window views revealed.
+  std::vector<gfx::Rect> bounds_in_screen(
+      delegate_->GetVisibleBoundsInScreen());
+  DCHECK(!bounds_in_screen.empty());
+  int bottommost_in_screen = bounds_in_screen[0].bottom();
+  for (size_t i = 1; i < bounds_in_screen.size(); ++i) {
+    if (bounds_in_screen[i].bottom() > bottommost_in_screen)
+      bottommost_in_screen = bounds_in_screen[i].bottom();
+  }
+  gfx::Point cursor_pos(0, bottommost_in_screen + 100);
   aura::Env::GetInstance()->set_last_mouse_location(cursor_pos);
   UpdateLocatedEventRevealedLock(NULL, ALLOW_REVEAL_WHILE_CLOSING_NO);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-// Observers:
-
-void ImmersiveModeControllerAsh::Observe(
-    int type,
-    const content::NotificationSource& source,
-    const content::NotificationDetails& details) {
-  DCHECK_EQ(chrome::NOTIFICATION_FULLSCREEN_CHANGED, type);
-  if (enabled_)
-    UpdateUseMinimalChrome(LAYOUT_YES);
-}
+// ui::EventHandler overrides:
 
-void ImmersiveModeControllerAsh::OnMouseEvent(ui::MouseEvent* event) {
+void ImmersiveFullscreenController::OnMouseEvent(ui::MouseEvent* event) {
   if (!enabled_)
     return;
 
@@ -442,14 +368,14 @@ void ImmersiveModeControllerAsh::OnMouseEvent(ui::MouseEvent* event) {
     UpdateTopEdgeHoverTimer(event);
 }
 
-void ImmersiveModeControllerAsh::OnTouchEvent(ui::TouchEvent* event) {
+void ImmersiveFullscreenController::OnTouchEvent(ui::TouchEvent* event) {
   if (!enabled_ || event->type() != ui::ET_TOUCH_PRESSED)
     return;
 
   UpdateLocatedEventRevealedLock(event, ALLOW_REVEAL_WHILE_CLOSING_NO);
 }
 
-void ImmersiveModeControllerAsh::OnGestureEvent(ui::GestureEvent* event) {
+void ImmersiveFullscreenController::OnGestureEvent(ui::GestureEvent* event) {
   if (!enabled_)
     return;
 
@@ -481,16 +407,24 @@ void ImmersiveModeControllerAsh::OnGestureEvent(ui::GestureEvent* event) {
   }
 }
 
-void ImmersiveModeControllerAsh::OnWillChangeFocus(views::View* focused_before,
-                                                   views::View* focused_now) {
+////////////////////////////////////////////////////////////////////////////////
+// views::FocusChangeListener overrides:
+
+void ImmersiveFullscreenController::OnWillChangeFocus(
+    views::View* focused_before,
+    views::View* focused_now) {
 }
 
-void ImmersiveModeControllerAsh::OnDidChangeFocus(views::View* focused_before,
-                                                  views::View* focused_now) {
+void ImmersiveFullscreenController::OnDidChangeFocus(
+    views::View* focused_before,
+    views::View* focused_now) {
   UpdateFocusRevealedLock();
 }
 
-void ImmersiveModeControllerAsh::OnWidgetDestroying(views::Widget* widget) {
+////////////////////////////////////////////////////////////////////////////////
+// views::WidgetObserver overrides:
+
+void ImmersiveFullscreenController::OnWidgetDestroying(views::Widget* widget) {
   EnableWindowObservers(false);
   native_window_ = NULL;
 
@@ -499,7 +433,7 @@ void ImmersiveModeControllerAsh::OnWidgetDestroying(views::Widget* widget) {
   enabled_ = false;
 }
 
-void ImmersiveModeControllerAsh::OnWidgetActivationChanged(
+void ImmersiveFullscreenController::OnWidgetActivationChanged(
     views::Widget* widget,
     bool active) {
   // Mouse hover should not initiate revealing the top-of-window views while
@@ -520,52 +454,26 @@ void ImmersiveModeControllerAsh::OnWidgetActivationChanged(
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-// Animation delegate:
+// gfx::AnimationDelegate overrides:
 
-void ImmersiveModeControllerAsh::AnimationEnded(
+void ImmersiveFullscreenController::AnimationEnded(
     const gfx::Animation* animation) {
   if (reveal_state_ == SLIDING_OPEN) {
-    // AnimationProgressed() is called immediately before AnimationEnded()
-    // and does a layout.
-    OnSlideOpenAnimationCompleted(LAYOUT_NO);
+    OnSlideOpenAnimationCompleted();
   } else if (reveal_state_ == SLIDING_CLOSED) {
     OnSlideClosedAnimationCompleted();
   }
 }
 
-void ImmersiveModeControllerAsh::AnimationProgressed(
+void ImmersiveFullscreenController::AnimationProgressed(
     const gfx::Animation* animation) {
-  // Relayout. This will also move any views whose position depends on the
-  // top container position such as the find bar.
-  // We do not call LayoutBrowserRootView() here because we are not toggling
-  // the tab strip's immersive style so relaying out the non client view is not
-  // necessary.
-  top_container_->parent()->Layout();
+  delegate_->SetVisibleFraction(animation->GetCurrentValue());
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // aura::WindowObserver overrides:
 
-void ImmersiveModeControllerAsh::OnWindowPropertyChanged(aura::Window* window,
-                                                         const void* key,
-                                                         intptr_t old) {
-  if (!enabled_)
-    return;
-
-  if (key == aura::client::kShowStateKey) {
-    // Disable immersive mode when the user exits fullscreen without going
-    // through FullscreenController::ToggleFullscreenMode(). This is the case
-    // if the user exits fullscreen via the restore button.
-    ui::WindowShowState show_state = static_cast<ui::WindowShowState>(
-        native_window_->GetProperty(aura::client::kShowStateKey));
-    if (show_state != ui::SHOW_STATE_FULLSCREEN &&
-        show_state != ui::SHOW_STATE_MINIMIZED) {
-      delegate_->FullscreenStateChanged();
-    }
-  }
-}
-
-void ImmersiveModeControllerAsh::OnAddTransientChild(aura::Window* window,
+void ImmersiveFullscreenController::OnAddTransientChild(aura::Window* window,
                                                      aura::Window* transient) {
   views::BubbleDelegateView* bubble_delegate = AsBubbleDelegate(transient);
   if (bubble_delegate &&
@@ -578,76 +486,68 @@ void ImmersiveModeControllerAsh::OnAddTransientChild(aura::Window* window,
   }
 }
 
-void ImmersiveModeControllerAsh::OnRemoveTransientChild(
+void ImmersiveFullscreenController::OnRemoveTransientChild(
     aura::Window* window,
     aura::Window* transient) {
   bubble_manager_->StopObserving(transient);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
+// ash::ImmersiveRevealedLock::Delegate overrides:
+
+void ImmersiveFullscreenController::LockRevealedState(
+    AnimateReveal animate_reveal) {
+  ++revealed_lock_count_;
+  Animate animate = (animate_reveal == ANIMATE_REVEAL_YES) ?
+      ANIMATE_FAST : ANIMATE_NO;
+  MaybeStartReveal(animate);
+}
+
+void ImmersiveFullscreenController::UnlockRevealedState() {
+  --revealed_lock_count_;
+  DCHECK_GE(revealed_lock_count_, 0);
+  if (revealed_lock_count_ == 0) {
+    // Always animate ending the reveal fast.
+    MaybeEndReveal(ANIMATE_FAST);
+  }
+}
+
+////////////////////////////////////////////////////////////////////////////////
 // private:
 
-void ImmersiveModeControllerAsh::EnableWindowObservers(bool enable) {
+void ImmersiveFullscreenController::EnableWindowObservers(bool enable) {
   if (observers_enabled_ == enable)
     return;
   observers_enabled_ = enable;
 
-  if (!native_window_) {
-    NOTREACHED() << "ImmersiveModeControllerAsh not initialized";
-    return;
-  }
-
   views::Widget* widget =
       views::Widget::GetWidgetForNativeWindow(native_window_);
   views::FocusManager* focus_manager = widget->GetFocusManager();
+
   if (enable) {
     widget->AddObserver(this);
     focus_manager->AddFocusChangeListener(this);
+    Shell::GetInstance()->AddPreTargetHandler(this);
+    native_window_->AddObserver(this);
+
+    RecreateBubbleManager();
   } else {
     widget->RemoveObserver(this);
     focus_manager->RemoveFocusChangeListener(this);
-  }
-
-  if (enable)
-    ash::Shell::GetInstance()->AddPreTargetHandler(this);
-  else
-    ash::Shell::GetInstance()->RemovePreTargetHandler(this);
-
-  if (enable) {
-    native_window_->AddObserver(this);
-  } else {
+    Shell::GetInstance()->RemovePreTargetHandler(this);
     native_window_->RemoveObserver(this);
-  }
 
-  if (enable) {
-    RecreateBubbleManager();
-  } else {
     // We have stopped observing whether transient children are added or removed
     // to |native_window_|. The set of bubbles that BubbleManager is observing
     // will become stale really quickly. Destroy BubbleManager and recreate it
     // when we start observing |native_window_| again.
     bubble_manager_.reset();
-  }
-
-  if (enable) {
-    registrar_.Add(
-        this,
-        chrome::NOTIFICATION_FULLSCREEN_CHANGED,
-        content::Source<FullscreenController>(
-            delegate_->GetFullscreenController()));
-  } else {
-    registrar_.Remove(
-        this,
-        chrome::NOTIFICATION_FULLSCREEN_CHANGED,
-        content::Source<FullscreenController>(
-            delegate_->GetFullscreenController()));
-  }
 
-  if (!enable)
     animation_->Stop();
+  }
 }
 
-void ImmersiveModeControllerAsh::UpdateTopEdgeHoverTimer(
+void ImmersiveFullscreenController::UpdateTopEdgeHoverTimer(
     ui::MouseEvent* event) {
   DCHECK(enabled_);
   // Stop the timer if the top-of-window views are already revealed.
@@ -661,11 +561,8 @@ void ImmersiveModeControllerAsh::UpdateTopEdgeHoverTimer(
     return;
 
   // Stop the timer if the cursor left the top edge or is on a different
-  // display. The bounds of |top_container_|'s parent are used to infer the hit
-  // bounds because |top_container_| will be partially offscreen if it is
-  // animating closed.
-  gfx::Rect hit_bounds_in_screen =
-      top_container_->parent()->GetBoundsInScreen();
+  // display.
+  gfx::Rect hit_bounds_in_screen = GetDisplayBoundsInScreen(native_window_);
   hit_bounds_in_screen.set_height(kMouseRevealBoundsHeight);
   if (!hit_bounds_in_screen.Contains(location_in_screen)) {
     top_edge_hover_timer_.Stop();
@@ -688,11 +585,12 @@ void ImmersiveModeControllerAsh::UpdateTopEdgeHoverTimer(
   top_edge_hover_timer_.Start(
       FROM_HERE,
       base::TimeDelta::FromMilliseconds(kMouseRevealDelayMs),
-      base::Bind(&ImmersiveModeControllerAsh::AcquireLocatedEventRevealedLock,
-                 base::Unretained(this)));
+      base::Bind(
+          &ImmersiveFullscreenController::AcquireLocatedEventRevealedLock,
+          base::Unretained(this)));
 }
 
-void ImmersiveModeControllerAsh::UpdateLocatedEventRevealedLock(
+void ImmersiveFullscreenController::UpdateLocatedEventRevealedLock(
     ui::LocatedEvent* event,
     AllowRevealWhileClosing allow_reveal_while_closing) {
   if (!enabled_)
@@ -741,42 +639,42 @@ void ImmersiveModeControllerAsh::UpdateLocatedEventRevealedLock(
     return;
   }
 
-  gfx::Rect hit_bounds_in_top_container = top_container_->GetVisibleBounds();
-  // TODO(tdanderson): Implement View::ConvertRectToScreen();
-  gfx::Point hit_bounds_in_screen_origin = hit_bounds_in_top_container.origin();
-  views::View::ConvertPointToScreen(top_container_,
-      &hit_bounds_in_screen_origin);
-  gfx::Rect hit_bounds_in_screen(hit_bounds_in_screen_origin,
-      hit_bounds_in_top_container.size());
-
-  gfx::Rect find_bar_hit_bounds_in_screen = find_bar_visible_bounds_in_screen_;
-
-  // Allow the cursor to move slightly off the top-of-window views before
-  // sliding closed. This helps when the user is attempting to click on the
-  // bookmark bar and overshoots slightly.
-  if (event && event->type() == ui::ET_MOUSE_MOVED) {
-    const int kBoundsOffsetY = 8;
-    hit_bounds_in_screen.Inset(0, 0, 0, -kBoundsOffsetY);
-    find_bar_hit_bounds_in_screen.Inset(0, 0, 0, -kBoundsOffsetY);
+  // The visible bounds of |top_container_| should be contained in
+  // |hit_bounds_in_screen|.
+  std::vector<gfx::Rect> hit_bounds_in_screen =
+      delegate_->GetVisibleBoundsInScreen();
+  bool keep_revealed = false;
+  for (size_t i = 0; i < hit_bounds_in_screen.size(); ++i) {
+    // Allow the cursor to move slightly off the top-of-window views before
+    // sliding closed. In the case of ImmersiveModeControllerAsh, this helps
+    // when the user is attempting to click on the bookmark bar and overshoots
+    // slightly.
+    if (event && event->type() == ui::ET_MOUSE_MOVED) {
+      const int kBoundsOffsetY = 8;
+      hit_bounds_in_screen[i].Inset(0, 0, 0, -kBoundsOffsetY);
+    }
+
+    if (hit_bounds_in_screen[i].Contains(location_in_screen)) {
+      keep_revealed = true;
+      break;
+    }
   }
 
-  if (hit_bounds_in_screen.Contains(location_in_screen) ||
-      find_bar_hit_bounds_in_screen.Contains(location_in_screen)) {
+  if (keep_revealed)
     AcquireLocatedEventRevealedLock();
-  } else {
+  else
     located_event_revealed_lock_.reset();
-  }
 }
 
-void ImmersiveModeControllerAsh::AcquireLocatedEventRevealedLock() {
+void ImmersiveFullscreenController::AcquireLocatedEventRevealedLock() {
   // CAUTION: Acquiring the lock results in a reentrant call to
   // AcquireLocatedEventRevealedLock() when
-  // |ImmersiveModeControllerAsh::animations_disabled_for_test_| is true.
+  // |ImmersiveFullscreenController::animations_disabled_for_test_| is true.
   if (!located_event_revealed_lock_.get())
     located_event_revealed_lock_.reset(GetRevealedLock(ANIMATE_REVEAL_YES));
 }
 
-void ImmersiveModeControllerAsh::UpdateFocusRevealedLock() {
+void ImmersiveFullscreenController::UpdateFocusRevealedLock() {
   if (!enabled_)
     return;
 
@@ -824,7 +722,7 @@ void ImmersiveModeControllerAsh::UpdateFocusRevealedLock() {
   }
 }
 
-bool ImmersiveModeControllerAsh::UpdateRevealedLocksForSwipe(
+bool ImmersiveFullscreenController::UpdateRevealedLocksForSwipe(
     SwipeType swipe_type) {
   if (!enabled_ || swipe_type == SWIPE_NONE)
     return false;
@@ -856,38 +754,7 @@ bool ImmersiveModeControllerAsh::UpdateRevealedLocksForSwipe(
   return false;
 }
 
-void ImmersiveModeControllerAsh::UpdateUseMinimalChrome(Layout layout) {
-  // May be NULL in tests.
-  FullscreenController* fullscreen_controller =
-      delegate_->GetFullscreenController();
-  bool in_tab_fullscreen = fullscreen_controller ?
-      fullscreen_controller->IsFullscreenForTabOrPending() : false;
-  bool use_minimal_chrome = !in_tab_fullscreen && enabled_;
-
-  // When using minimal chrome, the shelf is auto-hidden. The auto-hidden shelf
-  // displays a 3px 'light bar' when it is closed. Otherwise, the shelf is
-  // hidden completely and cannot be revealed.
-  ash::wm::GetWindowState(native_window_)->set_hide_shelf_when_fullscreen(
-      !use_minimal_chrome);
-
-  TabIndicatorVisibility previous_tab_indicator_visibility =
-      tab_indicator_visibility_;
-  if (tab_indicator_visibility_ != TAB_INDICATORS_FORCE_HIDE) {
-    tab_indicator_visibility_ = use_minimal_chrome ?
-        TAB_INDICATORS_SHOW : TAB_INDICATORS_HIDE;
-  }
-
-  ash::Shell::GetInstance()->UpdateShelfVisibility();
-
-  if (tab_indicator_visibility_ != previous_tab_indicator_visibility) {
-    // If the top-of-window views are revealed or animating, the change will
-    // take effect with the layout once the top-of-window views are closed.
-    if (layout == LAYOUT_YES && reveal_state_ == CLOSED)
-      LayoutBrowserRootView();
-  }
-}
-
-int ImmersiveModeControllerAsh::GetAnimationDuration(Animate animate) const {
+int ImmersiveFullscreenController::GetAnimationDuration(Animate animate) const {
   switch (animate) {
     case ANIMATE_NO:
       return 0;
@@ -900,7 +767,7 @@ int ImmersiveModeControllerAsh::GetAnimationDuration(Animate animate) const {
   return 0;
 }
 
-void ImmersiveModeControllerAsh::MaybeStartReveal(Animate animate) {
+void ImmersiveFullscreenController::MaybeStartReveal(Animate animate) {
   if (!enabled_)
     return;
 
@@ -917,58 +784,34 @@ void ImmersiveModeControllerAsh::MaybeStartReveal(Animate animate) {
   RevealState previous_reveal_state = reveal_state_;
   reveal_state_ = SLIDING_OPEN;
   if (previous_reveal_state == CLOSED) {
-    // Turn on layer painting so that we can overlap the web contents.
-    top_container_->SetPaintToLayer(true);
-
-    // Ensure window caption buttons are updated and the view bounds are
-    // computed at normal (non-immersive-style) size. The layout call moves the
-    // top-of-window views to their initial offscreen position for the
-    // animation.
-    delegate_->SetImmersiveStyle(false);
-    SetRenderWindowTopInsetsForTouch(0);
-    LayoutBrowserRootView();
-
-    // Do not do any more processing if LayoutBrowserView() changed
+    delegate_->OnImmersiveRevealStarted();
+
+    // Do not do any more processing if OnImmersiveRevealStarted() changed
     // |reveal_state_|.
-    if (reveal_state_ != SLIDING_OPEN) {
-      if (reveal_state_ == REVEALED)
-        FOR_EACH_OBSERVER(Observer, observers_, OnImmersiveRevealStarted());
+    if (reveal_state_ != SLIDING_OPEN)
       return;
-    }
   }
   // Slide in the reveal view.
   if (animate == ANIMATE_NO) {
     animation_->Reset(1);
-    OnSlideOpenAnimationCompleted(LAYOUT_YES);
+    OnSlideOpenAnimationCompleted();
   } else {
     animation_->SetSlideDuration(GetAnimationDuration(animate));
     animation_->Show();
   }
-
-  if (previous_reveal_state == CLOSED)
-     FOR_EACH_OBSERVER(Observer, observers_, OnImmersiveRevealStarted());
-}
-
-void ImmersiveModeControllerAsh::LayoutBrowserRootView() {
-  // Update the window caption buttons.
-  widget_->non_client_view()->frame_view()->ResetWindowControls();
-  // Layout all views, including BrowserView.
-  widget_->GetRootView()->Layout();
 }
 
-void ImmersiveModeControllerAsh::OnSlideOpenAnimationCompleted(Layout layout) {
+void ImmersiveFullscreenController::OnSlideOpenAnimationCompleted() {
   DCHECK_EQ(SLIDING_OPEN, reveal_state_);
   reveal_state_ = REVEALED;
-
-  if (layout == LAYOUT_YES)
-    top_container_->parent()->Layout();
+  delegate_->SetVisibleFraction(1);
 
   // The user may not have moved the mouse since the reveal was initiated.
   // Update the revealed lock to reflect the mouse's current state.
   UpdateLocatedEventRevealedLock(NULL, ALLOW_REVEAL_WHILE_CLOSING_NO);
 }
 
-void ImmersiveModeControllerAsh::MaybeEndReveal(Animate animate) {
+void ImmersiveFullscreenController::MaybeEndReveal(Animate animate) {
   if (!enabled_ || revealed_lock_count_ != 0)
     return;
 
@@ -993,19 +836,14 @@ void ImmersiveModeControllerAsh::MaybeEndReveal(Animate animate) {
   }
 }
 
-void ImmersiveModeControllerAsh::OnSlideClosedAnimationCompleted() {
+void ImmersiveFullscreenController::OnSlideClosedAnimationCompleted() {
   DCHECK_EQ(SLIDING_CLOSED, reveal_state_);
   reveal_state_ = CLOSED;
-  // Layers aren't needed after animation completes.
-  top_container_->SetPaintToLayer(false);
-  // Update tabstrip for closed state.
-  delegate_->SetImmersiveStyle(true);
-  SetRenderWindowTopInsetsForTouch(kNearTopContainerDistance);
-  LayoutBrowserRootView();
+  delegate_->OnImmersiveRevealEnded();
 }
 
-ImmersiveModeControllerAsh::SwipeType ImmersiveModeControllerAsh::GetSwipeType(
-    ui::GestureEvent* event) const {
+ImmersiveFullscreenController::SwipeType
+ImmersiveFullscreenController::GetSwipeType(ui::GestureEvent* event) const {
   if (event->type() != ui::ET_GESTURE_SCROLL_UPDATE)
     return SWIPE_NONE;
   // Make sure that it is a clear vertical gesture.
@@ -1019,7 +857,7 @@ ImmersiveModeControllerAsh::SwipeType ImmersiveModeControllerAsh::GetSwipeType(
   return SWIPE_NONE;
 }
 
-bool ImmersiveModeControllerAsh::ShouldIgnoreMouseEventAtLocation(
+bool ImmersiveFullscreenController::ShouldIgnoreMouseEventAtLocation(
     const gfx::Point& location) const {
   // Ignore mouse events in the region immediately above the top edge of the
   // display. This is to handle the case of a user with a vertical display
@@ -1034,57 +872,44 @@ bool ImmersiveModeControllerAsh::ShouldIgnoreMouseEventAtLocation(
   // (Mouse events in this region cannot start or end a reveal). This allows a
   // user to overshoot the top of the bottom display and still reveal the
   // top-of-window views.
-  gfx::Rect dead_region = top_container_->parent()->GetBoundsInScreen();
+  gfx::Rect dead_region = GetDisplayBoundsInScreen(native_window_);
   dead_region.set_y(dead_region.y() - kHeightOfDeadRegionAboveTopContainer);
   dead_region.set_height(kHeightOfDeadRegionAboveTopContainer);
   return dead_region.Contains(location);
 }
 
-bool ImmersiveModeControllerAsh::ShouldHandleGestureEvent(
+bool ImmersiveFullscreenController::ShouldHandleGestureEvent(
     const gfx::Point& location) const {
-  gfx::Rect top_container_bounds_in_screen =
-      top_container_->GetBoundsInScreen();
-
-  // All of the gestures that are of interest start in a region with left &
-  // right edges agreeing with |top_container_|. When CLOSED it is difficult to
-  // hit the bounds due to small size of the tab strip, so the hit target needs
-  // to be extended on the bottom, thus the inset call.
-  gfx::Rect near_bounds = top_container_bounds_in_screen;
-  if (reveal_state_ == CLOSED)
-    near_bounds.Inset(gfx::Insets(0, 0, -kNearTopContainerDistance, 0));
-  if (near_bounds.Contains(location))
+  if (reveal_state_ == REVEALED) {
+    std::vector<gfx::Rect> hit_bounds_in_screen(
+        delegate_->GetVisibleBoundsInScreen());
+    for (size_t i = 0; i < hit_bounds_in_screen.size(); ++i) {
+      if (hit_bounds_in_screen[i].Contains(location))
+        return true;
+    }
+    return false;
+  }
+
+  // When the top-of-window views are not fully revealed, handle gestures which
+  // start in the top few pixels of the screen.
+  gfx::Rect hit_bounds_in_screen(GetDisplayBoundsInScreen(native_window_));
+  hit_bounds_in_screen.set_height(kNearTopContainerDistance);
+  if (hit_bounds_in_screen.Contains(location))
     return true;
 
-  // There may be a bezel sensor off screen logically above |top_container_|
-  // thus the test needs to include gestures starting above, but this needs to
-  // be distinguished from events originating on another screen from
-  // (potentially) an extended desktop. The check for the event not contained by
-  // the closest screen ensures that the event is from a valid bezel and can be
-  // interpreted as such.
+  // There may be a bezel sensor off screen logically above
+  // |hit_bounds_in_screen|. The check for the event not contained by the
+  // closest screen ensures that the event is from a valid bezel (as opposed to
+  // another screen in an extended desktop).
   gfx::Rect screen_bounds =
-      ash::Shell::GetScreen()->GetDisplayNearestPoint(location).bounds();
+      Shell::GetScreen()->GetDisplayNearestPoint(location).bounds();
   return (!screen_bounds.Contains(location) &&
-          location.y() < top_container_bounds_in_screen.y() &&
-          location.x() >= top_container_bounds_in_screen.x() &&
-          location.x() < top_container_bounds_in_screen.right());
+          location.y() < hit_bounds_in_screen.y() &&
+          location.x() >= hit_bounds_in_screen.x() &&
+          location.x() < hit_bounds_in_screen.right());
 }
 
-void ImmersiveModeControllerAsh::SetRenderWindowTopInsetsForTouch(
-    int top_inset) {
-  content::WebContents* contents = delegate_->GetWebContents();
-  if (contents) {
-    aura::Window* window = contents->GetView()->GetContentNativeView();
-    // |window| is NULL if the renderer crashed.
-    if (window) {
-      gfx::Insets inset(top_inset, 0, 0, 0);
-      window->SetHitTestBoundsOverrideOuter(
-          window->hit_test_bounds_override_outer_mouse(),
-          inset);
-    }
-  }
-}
-
-void ImmersiveModeControllerAsh::RecreateBubbleManager() {
+void ImmersiveFullscreenController::RecreateBubbleManager() {
   bubble_manager_.reset(new BubbleManager(this));
   const std::vector<aura::Window*> transient_children =
       native_window_->transient_children();
@@ -1099,3 +924,5 @@ void ImmersiveModeControllerAsh::RecreateBubbleManager() {
     }
   }
 }
+
+}  // namespace ash