Block keyboard and mouse input when maximize mode is activated by accelerometer.

ash/desktop_background/desktop_background_controller.cc

Index: ash/desktop_background/desktop_background_controller.cc
diff --git a/ash/desktop_background/desktop_background_controller.cc b/ash/desktop_background/desktop_background_controller.cc
index 730558696d93d2ce82e7a7dcb78b172c32d568d2..8cb0128178d32f0199a9b867c2f58cd5f5ccd392 100644
--- a/ash/desktop_background/desktop_background_controller.cc
+++ b/ash/desktop_background/desktop_background_controller.cc
@@ -161,11 +161,13 @@ DesktopBackgroundController::DesktopBackgroundController()
       weak_ptr_factory_(this),
       wallpaper_reload_delay_(kWallpaperReloadDelayMs) {
   Shell::GetInstance()->display_controller()->AddObserver(this);
+  Shell::GetInstance()->AddShellObserver(this);
 }
 
 DesktopBackgroundController::~DesktopBackgroundController() {
   CancelDefaultWallpaperLoader();
   Shell::GetInstance()->display_controller()->RemoveObserver(this);
+  Shell::GetInstance()->RemoveShellObserver(this);
 }
 
 gfx::ImageSkia DesktopBackgroundController::GetWallpaper() const {
@@ -190,23 +192,6 @@ WallpaperLayout DesktopBackgroundController::GetWallpaperLayout() const {
   return WALLPAPER_LAYOUT_CENTER_CROPPED;
 }
 
-void DesktopBackgroundController::OnRootWindowAdded(aura::Window* root_window) {
-  // The background hasn't been set yet.
-  if (desktop_background_mode_ == BACKGROUND_NONE)
-    return;
-
-  // Handle resolution change for "built-in" images.
-  gfx::Size max_display_size = GetMaxDisplaySizeInNative();
-  if (current_max_display_size_ != max_display_size) {
-    current_max_display_size_ = max_display_size;
-    if (desktop_background_mode_ == BACKGROUND_IMAGE &&
-        current_wallpaper_.get())
-      UpdateWallpaper();
-  }
-
-  InstallDesktopController(root_window);
-}
-
 bool DesktopBackgroundController::SetDefaultWallpaper(bool is_guest) {
   VLOG(1) << "SetDefaultWallpaper: is_guest=" << is_guest;
   const bool use_large =
@@ -327,6 +312,23 @@ void DesktopBackgroundController::OnDisplayConfigurationChanged() {
   }
 }
 
+void DesktopBackgroundController::OnRootWindowAdded(aura::Window* root_window) {
+  // The background hasn't been set yet.
+  if (desktop_background_mode_ == BACKGROUND_NONE)
+    return;
+
+  // Handle resolution change for "built-in" images.
+  gfx::Size max_display_size = GetMaxDisplaySizeInNative();
+  if (current_max_display_size_ != max_display_size) {
+    current_max_display_size_ = max_display_size;
+    if (desktop_background_mode_ == BACKGROUND_IMAGE &&
+        current_wallpaper_.get())
+      UpdateWallpaper();
+  }
+
+  InstallDesktopController(root_window);
+}
+
 bool DesktopBackgroundController::DefaultWallpaperIsAlreadyLoadingOrLoaded(
     const base::FilePath& image_file,
     int image_resource_id) const {