Transform animations should not collapse by default when interpolating

cc/animation/element_animations.h

 // Copyright 2015 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_ANIMATION_ELEMENT_ANIMATIONS_H_
 #define CC_ANIMATION_ELEMENT_ANIMATIONS_H_
 
 #include <memory>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/observer_list.h"
 #include "cc/animation/animation_export.h"
 #include "cc/trees/element_id.h"
 #include "cc/trees/property_animation_state.h"
 #include "cc/trees/target_property.h"
 #include "ui/gfx/geometry/scroll_offset.h"
 #include "ui/gfx/transform.h"
 
 namespace gfx {
 class BoxF;
 }
 
 namespace cc {
 
 class AnimationHost;
 class AnimationPlayer;
 class FilterOperations;
+class TransformOperations;
 enum class ElementListType;
 struct AnimationEvent;
 
 enum class UpdateTickingType { NORMAL, FORCE };
 
 // An ElementAnimations owns a list of all AnimationPlayers, attached to
 // the element.
 // This is a CC counterpart for blink::ElementAnimations (in 1:1 relationship).
 // No pointer to/from respective blink::ElementAnimations object for now.
 class CC_ANIMATION_EXPORT ElementAnimations
@@ skipping 101 matching lines @@
 
   void SetNeedsPushProperties();
   bool needs_push_properties() const { return needs_push_properties_; }
 
   void UpdateClientAnimationState();
   void SetNeedsUpdateImplClientState();
 
   void NotifyClientOpacityAnimated(float opacity,
                                    bool notify_active_elements,
                                    bool notify_pending_elements);
-  void NotifyClientTransformAnimated(const gfx::Transform& transform,
-                                     bool notify_active_elements,
-                                     bool notify_pending_elements);
+  void NotifyClientTransformOperationsAnimated(
+      const TransformOperations& operations,
+      bool notify_active_elements,
+      bool notify_pending_elements);
   void NotifyClientFilterAnimated(const FilterOperations& filter,
                                   bool notify_active_elements,
                                   bool notify_pending_elements);
   void NotifyClientScrollOffsetAnimated(const gfx::ScrollOffset& scroll_offset,
                                         bool notify_active_elements,
                                         bool notify_pending_elements);
   gfx::ScrollOffset ScrollOffsetForAnimation() const;
 
  private:
   friend class base::RefCounted<ElementAnimations>;
@@ skipping 27 matching lines @@
   PropertyAnimationState pending_state_;
 
   mutable bool needs_update_impl_client_state_;
 
   DISALLOW_COPY_AND_ASSIGN(ElementAnimations);
 };
 
 }  // namespace cc
 
 #endif  // CC_ANIMATION_ELEMENT_ANIMATIONS_H_