Clean up the tab animation code

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

 // Copyright (c) 2012 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_TAB_H_
 #define CHROME_BROWSER_UI_VIEWS_TABS_TAB_H_
 
 #include <list>
 #include <string>
 
@@ skipping 217 matching lines @@
   // mini tab title change and pulsing.
   double GetThrobValue();
 
   // Set the temporary offset for the favicon. This is used during the crash
   // animation.
   void SetFaviconHidingOffset(int offset);
 
   void DisplayCrashedFavicon();
   void ResetCrashedFavicon();
 
-  // Starts/Stops the crash animation.
   void StartCrashAnimation();
   void StopCrashAnimation();
 
+  void StartRecordingAnimation();
+  void StopRecordingAnimation();
+
   // Returns true if the crash animation is currently running.
   bool IsPerformingCrashAnimation() const;
 
   // Schedules repaint task for icon.
   void ScheduleIconPaint();
 
   // Performs a one-time initialization of static resources such as tab images.
   static void InitTabResources();
 
   // Returns the minimum possible size of a single unselected Tab, not
@@ skipping 28 matching lines @@
 
   // The offset used to animate the favicon location. This is used when the tab
   // crashes.
   int favicon_hiding_offset_;
 
   // The current index of the loading animation.
   int loading_animation_frame_;
 
   bool should_display_crashed_favicon_;
 
-  // Pulse animation. Non-null if StartPulse has been invoked.
-  scoped_ptr<ui::ThrobAnimation> pulse_animation_;
-
-  // Crash animation.
-  scoped_ptr<FaviconCrashAnimation> crash_animation_;
-
-  // Recording animation.
-  scoped_ptr<ui::ThrobAnimation> recording_animation_;
+  // The tab and the icon can both be animating. The tab 'throbs' by changing
+  // color. The icon can have one of several of animations like crashing,
+  // recording, projecting, etc.
+  scoped_ptr<ui::ThrobAnimation> tab_animation_;
+  scoped_ptr<ui::LinearAnimation> icon_animation_;
 
   scoped_refptr<ui::AnimationContainer> animation_container_;
 
   views::ImageButton* close_button_;
 
   // Whether to disable throbber animations. Only true if this is an app tab
   // renderer and a command line flag has been passed in to disable the
   // animations.
   bool throbber_disabled_;
 
@@ skipping 44 matching lines @@
   static int font_height_;
 
   // As the majority of the tabs are inactive, and painting tabs is slowish,
   // we cache a handful of the inactive tab backgrounds here.
   static ImageCache* image_cache_;
 
   DISALLOW_COPY_AND_ASSIGN(Tab);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TABS_TAB_H_