Animate the script badges.

chrome/browser/ui/cocoa/location_bar/page_action_decoration.h

Index: chrome/browser/ui/cocoa/location_bar/page_action_decoration.h
diff --git a/chrome/browser/ui/cocoa/location_bar/page_action_decoration.h b/chrome/browser/ui/cocoa/location_bar/page_action_decoration.h
index e0e2ab63a136ff1a93d599411948f5b54fc69234..c7e715a91e6d16310e3159a5cdca8e4e6856a711 100644
--- a/chrome/browser/ui/cocoa/location_bar/page_action_decoration.h
+++ b/chrome/browser/ui/cocoa/location_bar/page_action_decoration.h
@@ -8,9 +8,9 @@
 
 #include "chrome/browser/extensions/image_loading_tracker.h"
 #import "chrome/browser/ui/cocoa/location_bar/image_decoration.h"
+#include "chrome/common/extensions/extension_action.h"
 #include "googleurl/src/gurl.h"
 
-class ExtensionAction;
 @class ExtensionActionContextMenu;
 class LocationBarViewMac;
 class Profile;
@@ -24,7 +24,8 @@ class WebContents;
 
 class PageActionDecoration : public ImageDecoration,
                              public ImageLoadingTracker::Observer,
-                             public content::NotificationObserver {
+                             public content::NotificationObserver,
+                             public ExtensionAction::IconAnimation::Observer {
  public:
   PageActionDecoration(LocationBarViewMac* owner,
                        Profile* profile,
@@ -65,6 +66,10 @@ class PageActionDecoration : public ImageDecoration,
   // Show the popup in the frame, with the given URL.
   void ShowPopup(const NSRect& frame, const GURL& popup_url);
 
+  // Overridden from ExtensionAction::IconAnimation::Observer.
+  virtual void OnIconChanged(
+      const ExtensionAction::IconAnimation& animation) OVERRIDE;
+
   // Overridden from NotificationObserver:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
@@ -107,6 +112,10 @@ class PageActionDecoration : public ImageDecoration,
   // extension.
   bool preview_enabled_;
 
+  // Fade-in animation for the icon with observer scoped to this.
+  ExtensionAction::IconAnimation::ScopedObserver
+      scoped_icon_animation_observer_;
+
   // Used to register for notifications received by
   // NotificationObserver.
   content::NotificationRegistrar registrar_;