Fix favicon disappearing on pinned tabs

chrome/browser/ui/views/tabs/media_indicator_button.h

 // Copyright 2014 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.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_TABS_MEDIA_INDICATOR_BUTTON_H_
 #define CHROME_BROWSER_UI_VIEWS_TABS_MEDIA_INDICATOR_BUTTON_H_
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/ui/tabs/tab_utils.h"
@@ skipping 59 matching lines @@
   bool DoesIntersectRect(const View* target,
                          const gfx::Rect& rect) const override;
 
   // views::Button:
   void NotifyClick(const ui::Event& event) override;
 
   // views::CustomButton:
   bool IsTriggerableEvent(const ui::Event& event) override;
 
  private:
+  friend class MediaIndicatorButtonTest;
   class FadeAnimationDelegate;
 
   // Returns the tab (parent view) of this MediaIndicatorButton.
   Tab* GetTab() const;
 
   // Resets the images to display on the button to reflect |state| and the
   // parent tab's button color.  Should be called when either of these changes.
   void ResetImages(TabMediaState state);
 
   Tab* const parent_tab_;
 
   TabMediaState media_state_;
 
   // Media indicator fade-in/out animation (i.e., only on show/hide, not a
   // continuous animation).
   scoped_ptr<gfx::AnimationDelegate> fade_animation_delegate_;
   scoped_ptr<gfx::Animation> fade_animation_;
   TabMediaState showing_media_state_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaIndicatorButton);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TABS_MEDIA_INDICATOR_BUTTON_H_