cc: Support animating scroll offset

cc/test/animation_test_common.h

 // Copyright 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 CC_TEST_ANIMATION_TEST_COMMON_H_
 #define CC_TEST_ANIMATION_TEST_COMMON_H_
 
 #include "cc/animation/animation.h"
 #include "cc/animation/animation_curve.h"
 #include "cc/animation/layer_animation_controller.h"
 #include "cc/animation/layer_animation_value_observer.h"
+#include "cc/animation/layer_animation_value_provider.h"
 #include "cc/output/filter_operations.h"
+#include "cc/test/geometry_test_utils.h"
 
 namespace cc {
 class LayerImpl;
 class Layer;
 }
 
 namespace cc {
 
 class FakeFloatAnimationCurve : public FloatAnimationCurve {
  public:
@@ skipping 43 matching lines @@
 
 class FakeLayerAnimationValueObserver : public LayerAnimationValueObserver {
  public:
   FakeLayerAnimationValueObserver();
   virtual ~FakeLayerAnimationValueObserver();
 
   // LayerAnimationValueObserver implementation
   virtual void OnFilterAnimated(const FilterOperations& filters) OVERRIDE;
   virtual void OnOpacityAnimated(float opacity) OVERRIDE;
   virtual void OnTransformAnimated(const gfx::Transform& transform) OVERRIDE;
+  virtual void OnScrollOffsetAnimated(gfx::Vector2dF scroll_offset) OVERRIDE;
   virtual void OnAnimationWaitingForDeletion() OVERRIDE;
   virtual bool IsActive() const OVERRIDE;
 
   const FilterOperations& filters() const { return filters_; }
   float opacity() const  { return opacity_; }
   const gfx::Transform& transform() const { return transform_; }
+  gfx::Vector2dF scroll_offset() { return scroll_offset_; }
 
   bool animation_waiting_for_deletion() {
     return animation_waiting_for_deletion_;
   }
 
  private:
   FilterOperations filters_;
   float opacity_;
   gfx::Transform transform_;
+  gfx::Vector2dF scroll_offset_;
   bool animation_waiting_for_deletion_;
 };
 
 class FakeInactiveLayerAnimationValueObserver
     : public FakeLayerAnimationValueObserver {
  public:
   virtual bool IsActive() const OVERRIDE;
 };
 
+class FakeLayerAnimationValueProvider : public LayerAnimationValueProvider {
+ public:
+  virtual gfx::Vector2dF ScrollOffsetForAnimation() const OVERRIDE;
+
+  void set_scroll_offset(gfx::Vector2dF scroll_offset) {
+    scroll_offset_ = scroll_offset;
+  }
+
+ private:
+  gfx::Vector2dF scroll_offset_;
+};
+
 int AddOpacityTransitionToController(LayerAnimationController* controller,
                                      double duration,
                                      float start_opacity,
                                      float end_opacity,
                                      bool use_timing_function);
 
 int AddAnimatedTransformToController(LayerAnimationController* controller,
                                      double duration,
                                      int delta_x,
                                      int delta_y);
@@ skipping 31 matching lines @@
                              float end_brightness);
 
 int AddAnimatedFilterToLayer(LayerImpl* layer,
                              double duration,
                              float start_brightness,
                              float end_brightness);
 
 }  // namespace cc
 
 #endif  // CC_TEST_ANIMATION_TEST_COMMON_H_