cc: Rename SwapBuffers on CompositorFrameSink to SubmitCompositorFrame

cc/trees/single_thread_proxy.cc

Index: cc/trees/single_thread_proxy.cc
diff --git a/cc/trees/single_thread_proxy.cc b/cc/trees/single_thread_proxy.cc
index 6ac3ae14b92b7e691cad806110e15b4ad66fc64d..73e504a7319cbd19d2a9b5f6c26690c3e530f5e2 100644
--- a/cc/trees/single_thread_proxy.cc
+++ b/cc/trees/single_thread_proxy.cc
@@ -420,12 +420,12 @@ void SingleThreadProxy::SetBeginFrameSource(BeginFrameSource* source) {
     scheduler_on_impl_thread_->SetBeginFrameSource(source);
 }
 
-void SingleThreadProxy::DidSwapBuffersCompleteOnImplThread() {
+void SingleThreadProxy::DidReceiveCompositorFrameAckOnImplThread() {
   TRACE_EVENT0("cc,benchmark",
-               "SingleThreadProxy::DidSwapBuffersCompleteOnImplThread");
+               "SingleThreadProxy::DidReceiveCompositorFrameAckOnImplThread");
   if (scheduler_on_impl_thread_)
-    scheduler_on_impl_thread_->DidSwapBuffersComplete();
-  layer_tree_host_->DidCompleteSwapBuffers();
+    scheduler_on_impl_thread_->DidReceiveCompositorFrameAck();
+  layer_tree_host_->DidReceiveCompositorFrameAck();
 }
 
 void SingleThreadProxy::OnDrawForCompositorFrameSink(
@@ -550,7 +550,8 @@ DrawResult SingleThreadProxy::DoComposite(LayerTreeHostImpl::FrameData* frame) {
     if (draw_frame) {
       if (layer_tree_host_impl_->DrawLayers(frame)) {
         if (scheduler_on_impl_thread_)
-          scheduler_on_impl_thread_->DidSwapBuffers();
+          // Drawing implies we submitted a frame to the CompositorFrameSink.
+          scheduler_on_impl_thread_->DidSubmitCompositorFrame();
         client_->DidPostSwapBuffers();
       }
     }
@@ -688,13 +689,13 @@ void SingleThreadProxy::BeginMainFrameAbortedOnImplThread(
   scheduler_on_impl_thread_->BeginMainFrameAborted(reason);
 }
 
-DrawResult SingleThreadProxy::ScheduledActionDrawAndSwapIfPossible() {
+DrawResult SingleThreadProxy::ScheduledActionDrawIfPossible() {
   DebugScopedSetImplThread impl(task_runner_provider_);
   LayerTreeHostImpl::FrameData frame;
   return DoComposite(&frame);
 }
 
-DrawResult SingleThreadProxy::ScheduledActionDrawAndSwapForced() {
+DrawResult SingleThreadProxy::ScheduledActionDrawForced() {
   NOTREACHED();
   return INVALID_RESULT;
 }