Animate the script badges.

chrome/browser/ui/gtk/location_bar_view_gtk.h

Index: chrome/browser/ui/gtk/location_bar_view_gtk.h
diff --git a/chrome/browser/ui/gtk/location_bar_view_gtk.h b/chrome/browser/ui/gtk/location_bar_view_gtk.h
index 90557d94c96d32e458a3400139de5de147123cfb..aef919a3b304b2e10f97d063f7c513f33acea4bd 100644
--- a/chrome/browser/ui/gtk/location_bar_view_gtk.h
+++ b/chrome/browser/ui/gtk/location_bar_view_gtk.h
@@ -27,6 +27,7 @@
 #include "chrome/browser/ui/view_ids.h"
 #include "chrome/browser/ui/zoom/zoom_controller.h"
 #include "chrome/common/content_settings_types.h"
+#include "chrome/common/extensions/extension_action.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/common/page_transition_types.h"
@@ -230,9 +231,11 @@ class LocationBarViewGtk : public OmniboxEditController,
     DISALLOW_COPY_AND_ASSIGN(ContentSettingImageViewGtk);
   };
 
-  class PageActionViewGtk : public ImageLoadingTracker::Observer,
-                            public content::NotificationObserver,
-                            public ExtensionContextMenuModel::PopupDelegate {
+  class PageActionViewGtk :
+       public ImageLoadingTracker::Observer,
+       public content::NotificationObserver,
+       public ExtensionContextMenuModel::PopupDelegate,
+       public ExtensionAction::IconAnimation::Observer {
    public:
     PageActionViewGtk(LocationBarViewGtk* owner, ExtensionAction* page_action);
     virtual ~PageActionViewGtk();
@@ -289,6 +292,10 @@ class LocationBarViewGtk : public OmniboxEditController,
                                      GdkModifierType modifier,
                                      void* user_data);
 
+    // ExtensionAction::IconAnimationDelegate implementation.
+    virtual void OnIconChanged(
+        const ExtensionAction::IconAnimation& animation) OVERRIDE;
+
     // The location bar view that owns us.
     LocationBarViewGtk* owner_;
 
@@ -340,6 +347,10 @@ class LocationBarViewGtk : public OmniboxEditController,
     scoped_ptr<MenuGtk> context_menu_;
     scoped_refptr<ExtensionContextMenuModel> context_menu_model_;
 
+    // Fade-in animation for the icon with observer scoped to this.
+    ExtensionAction::IconAnimation::ScopedObserver
+        scoped_icon_animation_observer_;
+
     DISALLOW_COPY_AND_ASSIGN(PageActionViewGtk);
   };
   friend class PageActionViewGtk;