Removing the use of base::Time inside the LayerTreeHost system.

cc/trees/thread_proxy.cc

Index: cc/trees/thread_proxy.cc
diff --git a/cc/trees/thread_proxy.cc b/cc/trees/thread_proxy.cc
index ad96a04fe1f8fc9e247a00b52262901dc8c34f79..0f26a34c68d89947d15e59e19816a296689ac3a5 100644
--- a/cc/trees/thread_proxy.cc
+++ b/cc/trees/thread_proxy.cc
@@ -467,7 +467,7 @@ void ThreadProxy::SetNeedsCommitOnImplThread() {
 
 void ThreadProxy::PostAnimationEventsToMainThreadOnImplThread(
     scoped_ptr<AnimationEventsVector> events,
-    base::Time wall_clock_time) {
+    base::TimeTicks clock_time) {
   TRACE_EVENT0("cc",
                "ThreadProxy::PostAnimationEventsToMainThreadOnImplThread");
   DCHECK(IsImplThread());
@@ -476,7 +476,7 @@ void ThreadProxy::PostAnimationEventsToMainThreadOnImplThread(
       base::Bind(&ThreadProxy::SetAnimationEvents,
                  main_thread_weak_ptr_,
                  base::Passed(&events),
-                 wall_clock_time));
+                 clock_time));
 }
 
 bool ThreadProxy::ReduceContentsTextureMemoryOnImplThread(size_t limit_bytes,
@@ -1136,14 +1136,10 @@ DrawSwapReadbackResult ThreadProxy::DrawSwapReadbackInternal(
   else
     monotonic_time = impl().layer_tree_host_impl->CurrentFrameTimeTicks();
 
-  // TODO(ajuma): Remove wall_clock_time once the legacy implementation of
-  // animations in Blink is removed.
-  base::Time wall_clock_time = impl().layer_tree_host_impl->CurrentFrameTime();
-
   // TODO(enne): This should probably happen post-animate.
   if (impl().layer_tree_host_impl->pending_tree())
     impl().layer_tree_host_impl->pending_tree()->UpdateDrawProperties();
-  impl().layer_tree_host_impl->Animate(monotonic_time, wall_clock_time);
+  impl().layer_tree_host_impl->Animate(monotonic_time);
 
   // This method is called on a forced draw, regardless of whether we are able
   // to produce a frame, as the calling site on main thread is blocked until its
@@ -1403,12 +1399,12 @@ void ThreadProxy::DidCompleteSwapBuffers() {
 }
 
 void ThreadProxy::SetAnimationEvents(scoped_ptr<AnimationEventsVector> events,
-                                     base::Time wall_clock_time) {
+                                     base::TimeTicks clock_time) {
   TRACE_EVENT0("cc", "ThreadProxy::SetAnimationEvents");
   DCHECK(IsMainThread());
   if (!layer_tree_host())
     return;
-  layer_tree_host()->SetAnimationEvents(events.Pass(), wall_clock_time);
+  layer_tree_host()->SetAnimationEvents(events.Pass(), clock_time);
 }
 
 void ThreadProxy::CreateAndInitializeOutputSurface() {