Transform animations should not collapse by default when interpolating

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 "base/memory/ptr_util.h"
 #include "cc/animation/animation_host.h"
 #include "cc/animation/animation_id_provider.h"
 #include "cc/animation/animation_player.h"
@@ skipping 141 matching lines @@
 FakeTransformTransition::FakeTransformTransition(double duration)
     : duration_(base::TimeDelta::FromSecondsD(duration)) {
 }
 
 FakeTransformTransition::~FakeTransformTransition() {}
 
 base::TimeDelta FakeTransformTransition::Duration() const {
   return duration_;
 }
 
-gfx::Transform FakeTransformTransition::GetValue(base::TimeDelta time) const {
-  return gfx::Transform();
+TransformOperations FakeTransformTransition::GetValue(
+    base::TimeDelta time) const {
+  return TransformOperations();
 }
 
 bool FakeTransformTransition::AnimatedBoundsForBox(const gfx::BoxF& box,
                                                    gfx::BoxF* bounds) const {
   return false;
 }
 
 bool FakeTransformTransition::IsTranslation() const { return true; }
 
 bool FakeTransformTransition::PreservesAxisAlignment() const {
@@ skipping 220 matching lines @@
   scoped_refptr<AnimationPlayer> player =
       AnimationPlayer::Create(AnimationIdProvider::NextPlayerId());
   timeline->AttachPlayer(player);
   player->AttachElement(element_id);
   DCHECK(player->element_animations());
   return AddOpacityTransitionToPlayer(player.get(), duration, start_opacity,
                                       end_opacity, use_timing_function);
 }
 
 }  // namespace cc