CC Animations: Port Impl-only-scrolling to use compositor animation timelines.

cc/trees/mutator_host_client.h

Index: cc/trees/mutator_host_client.h
diff --git a/cc/trees/mutator_host_client.h b/cc/trees/mutator_host_client.h
index ffb2329e7ccad73f3e579e2c52163941b5786e45..fec78758d29d3f54c9bb5b565a5cdfe67b57a45e 100644
--- a/cc/trees/mutator_host_client.h
+++ b/cc/trees/mutator_host_client.h
@@ -5,6 +5,8 @@
 #ifndef CC_TREES_MUTATOR_HOST_CLIENT_H_
 #define CC_TREES_MUTATOR_HOST_CLIENT_H_
 
+#include "cc/base/cc_export.h"
+
 namespace gfx {
 class Transform;
 class ScrollOffset;
@@ -17,7 +19,7 @@ class Layer;
 
 enum class LayerTreeType { ACTIVE, PENDING };
 
-class MutatorHostClient {
+class CC_EXPORT MutatorHostClient {
  public:
   virtual bool IsLayerInTree(int layer_id, LayerTreeType tree_type) const = 0;
   virtual void SetMutatorsNeedCommit() = 0;
@@ -35,6 +37,9 @@ class MutatorHostClient {
       int layer_id,
       LayerTreeType tree_type,
       const gfx::ScrollOffset& scroll_offset) = 0;
+
+  virtual void ScrollOffsetAnimationFinished() {}

[ajuma, 2015/07/06 17:41:00]

This should be pure virtual like the other methods here.

[loyso (OOO), 2015/07/07 04:14:38]

Done.

+  virtual gfx::ScrollOffset GetScrollOffsetForAnimation(int layer_id) const = 0;
 };
 
 }  // namespace cc