Attempting to reland the Overview Button Change.

ash/wm/maximize_mode/maximize_mode_window_manager.cc

 // Copyright 2014 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 "ash/wm/maximize_mode/maximize_mode_window_manager.h"
 
 #include "ash/root_window_controller.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/wm/maximize_mode/workspace_backdrop_delegate.h"
 #include "ash/wm/mru_window_tracker.h"
 #include "ash/wm/workspace_controller.h"
 #include "ui/aura/window.h"
 #include "ui/gfx/screen.h"
 
 namespace ash {
 namespace internal {
 
 MaximizeModeWindowManager::~MaximizeModeWindowManager() {
   Shell::GetInstance()->RemoveShellObserver(this);
   Shell::GetScreen()->RemoveObserver(this);
   EnableBackdropBehindTopWindowOnEachDisplay(false);
   RemoveWindowCreationObservers();
   RestoreAllWindows();
+  Shell::GetInstance()->OnMaximizeModeEnded();
 }
 
 int MaximizeModeWindowManager::GetNumberOfManagedWindows() {
   return initial_state_type_.size();
 }
 
 void MaximizeModeWindowManager::OnOverviewModeStarted() {
   if (backdrops_hidden_)
     return;
 
@@ skipping 51 matching lines @@
   DisplayConfigurationChanged();
 }
 
 MaximizeModeWindowManager::MaximizeModeWindowManager()
       : backdrops_hidden_(false) {
   // TODO(skuhne): Turn off the overview mode and full screen modes before
   // entering the MaximzieMode.
   MaximizeAllWindows();
   AddWindowCreationObservers();
   EnableBackdropBehindTopWindowOnEachDisplay(true);
+  Shell::GetInstance()->OnMaximizeModeStarted();
   Shell::GetScreen()->AddObserver(this);
   Shell::GetInstance()->AddShellObserver(this);
 }
 
 void MaximizeModeWindowManager::MaximizeAllWindows() {
   MruWindowTracker::WindowList windows =
       MruWindowTracker::BuildWindowList(false);
   // Add all existing Mru windows.
   for (MruWindowTracker::WindowList::iterator window = windows.begin();
       window != windows.end(); ++window) {
@@ skipping 155 matching lines @@
         controller->root_window(),
         internal::kShellWindowId_DefaultContainer);
     controller->workspace_controller()->SetMaximizeBackdropDelegate(
         scoped_ptr<WorkspaceLayoutManagerDelegate>(
             enable ? new WorkspaceBackdropDelegate(container) : NULL));
   }
 }
 
 }  // namespace internal
 }  // namespace ash