Animation start scale should be considered for the raster scale

cc/test/animation_test_common.cc

 // 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.
 
 #include "cc/test/animation_test_common.h"
 
 #include "cc/animation/animation_id_provider.h"
 #include "cc/animation/keyframed_animation_curve.h"
 #include "cc/animation/layer_animation_controller.h"
 #include "cc/animation/transform_operations.h"
@@ skipping 156 matching lines @@
 }
 
 bool FakeTransformTransition::AffectsScale() const { return false; }
 
 bool FakeTransformTransition::IsTranslation() const { return true; }
 
 bool FakeTransformTransition::PreservesAxisAlignment() const {
   return true;
 }
 
+bool FakeTransformTransition::AnimationStartScale(bool forward_direction,
+                                                  float* start_scale) const {
+  *start_scale = 1.f;
+  return true;
+}
+
 bool FakeTransformTransition::MaximumTargetScale(bool forward_direction,
                                                  float* max_scale) const {
   *max_scale = 1.f;
   return true;
 }
 
 scoped_ptr<AnimationCurve> FakeTransformTransition::Clone() const {
   return make_scoped_ptr(new FakeTransformTransition(*this));
 }
 
@@ skipping 159 matching lines @@
                              double duration,
                              float start_brightness,
                              float end_brightness) {
   return AddAnimatedFilter(layer->layer_animation_controller(),
                            duration,
                            start_brightness,
                            end_brightness);
 }
 
 }  // namespace cc