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 bada38371e7d24c52bdf292121dc56793af23acb..8b54cb5b295ca7155edd9c679965b07114d6a07a 100644
--- a/ash/desktop_background/desktop_background_controller.cc
+++ b/ash/desktop_background/desktop_background_controller.cc
@@ -48,10 +48,12 @@ DesktopBackgroundController::DesktopBackgroundController()
       desktop_background_mode_(BACKGROUND_NONE),
       wallpaper_reload_delay_(kWallpaperReloadDelayMs) {
   Shell::GetInstance()->display_controller()->AddObserver(this);
+  Shell::GetInstance()->AddShellObserver(this);
 }
 
 DesktopBackgroundController::~DesktopBackgroundController() {
   Shell::GetInstance()->display_controller()->RemoveObserver(this);
+  Shell::GetInstance()->RemoveShellObserver(this);
 }
 
 gfx::ImageSkia DesktopBackgroundController::GetWallpaper() const {
@@ -76,23 +78,6 @@ 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::SetWallpaperImage(const gfx::ImageSkia& image,
                                                     WallpaperLayout layout) {
   VLOG(1) << "SetWallpaper: image_id=" << WallpaperResizer::GetImageId(image)
@@ -169,6 +154,23 @@ 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);
+}
+
 // static
 gfx::Size DesktopBackgroundController::GetMaxDisplaySizeInNative() {
   int width = 0;