Adds AnimationContainer, which can be used to group a set of

app/slide_animation.h

 // Copyright (c) 2006-2008 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 APP_SLIDE_ANIMATION_H_
 #define APP_SLIDE_ANIMATION_H_
 
 #include "app/animation.h"
 
 // Slide Animation
@@ skipping 25 matching lines @@
 //   void Layout() {
 //     if (animation_->IsAnimating()) {
 //       hover_image_.SetOpacity(animation_->GetCurrentValue());
 //     }
 //   }
 //  private:
 //   scoped_ptr<SlideAnimation> animation_;
 // }
 class SlideAnimation : public Animation {
  public:
-  explicit SlideAnimation(AnimationDelegate* target);
-  virtual ~SlideAnimation();
-
   enum TweenType {
     NONE,          // Linear.
     EASE_OUT,      // Fast in, slow out (default).
     EASE_IN,       // Slow in, fast out.
     EASE_IN_OUT,   // Slow in and out, fast in the middle.
     FAST_IN_OUT,   // Fast in and out, slow in the middle.
     EASE_OUT_SNAP, // Fast in, slow out, snap to final value.
   };
 
+  explicit SlideAnimation(AnimationDelegate* target);
+  virtual ~SlideAnimation();
+
   // Set the animation back to the 0 state.
   virtual void Reset();
   virtual void Reset(double value);
 
   // Begin a showing animation or reverse a hiding animation in progress.
   virtual void Show();
 
   // Begin a hiding animation or reverse a showing animation in progress.
   virtual void Hide();
 
@@ skipping 26 matching lines @@
   double value_current_;
 
   // How long a hover in/out animation will last for. This defaults to
   // kHoverFadeDurationMS, but can be overridden with SetDuration.
   int slide_duration_;
 
   DISALLOW_COPY_AND_ASSIGN(SlideAnimation);
 };
 
 #endif  // APP_SLIDE_ANIMATION_H_