Fix the full screen switching browser window dipping below launcher bar issue.

ash/wm/base_layout_manager.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.
 
 #include "ash/wm/base_layout_manager.h"
 
 #include "ash/shell.h"
 #include "ash/wm/property_util.h"
 #include "ash/wm/window_util.h"
 #include "ui/aura/client/aura_constants.h"
@@ skipping 49 matching lines @@
     child_bounds = gfx::Screen::GetMonitorWorkAreaNearestWindow(child);
   else if (window_util::IsWindowFullscreen(child))
     child_bounds = gfx::Screen::GetMonitorAreaNearestWindow(child);
   SetChildBoundsDirect(child, child_bounds);
 }
 
 /////////////////////////////////////////////////////////////////////////////
 // BaseLayoutManager, RootWindowObserver overrides:
 
 void BaseLayoutManager::OnRootWindowResized(const gfx::Size& new_size) {
+  AdjustWindowSizesForScreenChange();
+}
+
+void BaseLayoutManager::OnScreenWorkAreaInsetsChanged() {
+  AdjustWindowSizesForScreenChange();
+}
+
+void BaseLayoutManager::AdjustWindowSizesForScreenChange() {
   // If a user plugs an external monitor into a laptop running Aura the
   // monitor size will change.  Maximized windows need to resize to match.
   // We also do this when developers running Aura on a desktop manually resize
   // the host window.
+  // We also need to do this when user toggles between full screen mode and
+  // normal mode with maximized windows.
   for (WindowSet::const_iterator it = windows_.begin();
        it != windows_.end();
        ++it) {
     aura::Window* window = *it;
     // The work area may be smaller than the full screen.
     gfx::Rect monitor_rect = window_util::IsWindowFullscreen(window) ?
         gfx::Screen::GetMonitorAreaNearestWindow(window) :
         gfx::Screen::GetMonitorWorkAreaNearestWindow(window);
     // Put as much of the window as possible within the monitor area.
     window->SetBounds(window->bounds().AdjustToFit(monitor_rect));
@@ skipping 35 matching lines @@
       window->SetBounds(gfx::Screen::GetMonitorAreaNearestWindow(window));
       break;
 
     default:
       break;
   }
 }
 
 }  // namespace internal
 }  // namespace ash