Cleanup: Remove forward declarations in ui, part 2.

ui/gfx/compositor/test_layer_animation_delegate.h

 // Copyright (c) 2011 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 UI_GFX_COMPOSITOR_TEST_LAYER_ANIMATION_DELEGATE_H_
 #define UI_GFX_COMPOSITOR_TEST_LAYER_ANIMATION_DELEGATE_H_
 #pragma once
 
 #include "base/compiler_specific.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/transform.h"
 #include "ui/gfx/compositor/layer_animation_delegate.h"
 
 namespace ui {
 
-class LayerAnimationSequence;
-
 class TestLayerAnimationDelegate : public LayerAnimationDelegate {
  public:
   TestLayerAnimationDelegate();
-  TestLayerAnimationDelegate(const LayerAnimationDelegate& other);
+  explicit TestLayerAnimationDelegate(const LayerAnimationDelegate& other);
   virtual ~TestLayerAnimationDelegate();
 
   // Implementation of LayerAnimationDelegate
   virtual void SetBoundsFromAnimation(const gfx::Rect& bounds) OVERRIDE;
   virtual void SetTransformFromAnimation(const Transform& transform) OVERRIDE;
   virtual void SetOpacityFromAnimation(float opacity) OVERRIDE;
   virtual void ScheduleDrawForAnimation() OVERRIDE;
   virtual const gfx::Rect& GetBoundsForAnimation() const OVERRIDE;
   virtual const Transform& GetTransformForAnimation() const OVERRIDE;
   virtual float GetOpacityForAnimation() const OVERRIDE;
 
  private:
   gfx::Rect bounds_;
   Transform transform_;
   float opacity_;
 
   // Allow copy and assign.
 };
 
 }  // namespace ui
 
 #endif  // UI_GFX_COMPOSITOR_TEST_LAYER_ANIMATION_DELEGATE_H_