[wip] hack to use synthetic bfs for browser compositor

content/browser/renderer_host/compositor_impl_android.cc

 // Copyright (c) 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 "content/browser/renderer_host/compositor_impl_android.h"
 
 #include <android/bitmap.h>
 #include <android/native_window_jni.h>
 #include <stdint.h>
 #include <unordered_set>
@@ skipping 497 matching lines @@
 }
 
 void CompositorImpl::SetNeedsComposite() {
   if (!host_->IsVisible())
     return;
   TRACE_EVENT0("compositor", "Compositor::SetNeedsComposite");
   host_->SetNeedsAnimate();
 }
 
 void CompositorImpl::UpdateLayerTreeHost() {
+  TRACE_EVENT0("cc", "CompositorImpl::UpdateLayerTreeHost");
   client_->UpdateLayerTreeHost();
   if (needs_animate_) {
     needs_animate_ = false;
     root_window_->Animate(base::TimeTicks::Now());
   }
 }
 
 void CompositorImpl::RequestNewCompositorFrameSink() {
   DCHECK(!compositor_frame_sink_request_pending_)
       << "Output Surface Request is already pending?";
@@ skipping 175 matching lines @@
   pending_swapbuffers_--;
   client_->OnSwapBuffersCompleted(pending_swapbuffers_);
 }
 
 void CompositorImpl::DidLoseCompositorFrameSink() {
   TRACE_EVENT0("compositor", "CompositorImpl::DidLoseCompositorFrameSink");
   client_->OnSwapBuffersCompleted(0);
 }
 
 void CompositorImpl::DidCommit() {
+  TRACE_EVENT0("cc", "CompositorImpl::DidCommit");
   root_window_->OnCompositingDidCommit();
 }
 
 void CompositorImpl::AttachLayerForReadback(scoped_refptr<cc::Layer> layer) {
   readback_layer_tree_->AddChild(layer);
 }
 
 void CompositorImpl::RequestCopyOfOutputOnRootLayer(
     std::unique_ptr<cc::CopyOutputRequest> request) {
   root_window_->GetLayer()->RequestCopyOfOutput(std::move(request));
@@ skipping 10 matching lines @@
 
 cc::FrameSinkId CompositorImpl::GetFrameSinkId() {
   return frame_sink_id_;
 }
 
 bool CompositorImpl::HavePendingReadbacks() {
   return !readback_layer_tree_->children().empty();
 }
 
 }  // namespace content