Deliver IPC messages together with SwapCompositorFrame

content/renderer/gpu/render_widget_compositor.cc

Index: content/renderer/gpu/render_widget_compositor.cc
diff --git a/content/renderer/gpu/render_widget_compositor.cc b/content/renderer/gpu/render_widget_compositor.cc
index 6d58b519e0df9080a803943c1753c19207276fcf..8a621ba3800a5bc7766ef82ccf325c1a9aef1f52 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -19,6 +19,7 @@
 #include "base/values.h"
 #include "cc/base/latency_info_swap_promise.h"
 #include "cc/base/latency_info_swap_promise_monitor.h"
+#include "cc/base/swap_promise.h"
 #include "cc/base/switches.h"
 #include "cc/debug/layer_tree_debug_state.h"
 #include "cc/debug/micro_benchmark.h"
@@ -384,6 +385,11 @@ RenderWidgetCompositor::CreateLatencyInfoSwapPromiseMonitor(
           latency, layer_tree_host_.get(), NULL));
 }
 
+void RenderWidgetCompositor::QueueSwapPromise(

[mkosiba (inactive), 2014/05/06 22:30:33]

we'd need a way to track whether the commit actually took place

+    scope_ptr<cc::SwapPromise> promise) {
+  layer_tree_host_->QueueSwapPromise(promise.Pass());
+}
+
 int RenderWidgetCompositor::GetLayerTreeId() const {
   return layer_tree_host_->id();
 }
@@ -403,6 +409,10 @@ bool RenderWidgetCompositor::ScheduleMicroBenchmark(
   return layer_tree_host_->ScheduleMicroBenchmark(name, value.Pass(), callback);
 }
 
+int RenderWidgetCompositor::source_frame_number() {
+  return layer_tree_host_->source_frame_number();
+}
+
 void RenderWidgetCompositor::Initialize(cc::LayerTreeSettings settings) {
   scoped_refptr<base::MessageLoopProxy> compositor_message_loop_proxy;
   RenderThreadImpl* render_thread = RenderThreadImpl::current();