Remove GpuHostMsg_FrameDrawn and replace with client channel swap ack

content/common/gpu/image_transport_surface.cc

Index: content/common/gpu/image_transport_surface.cc
diff --git a/content/common/gpu/image_transport_surface.cc b/content/common/gpu/image_transport_surface.cc
index 45c1c83b5d388c1a95b6882298ada7fdc120ef41..6e05993cab66afef817cec0ce66f26617a7cf14b 100644
--- a/content/common/gpu/image_transport_surface.cc
+++ b/content/common/gpu/image_transport_surface.cc
@@ -113,9 +113,9 @@ void ImageTransportHelper::SendUpdateVSyncParameters(
                                                       interval));
 }
 
-void ImageTransportHelper::SendLatencyInfo(
+void ImageTransportHelper::SwapBuffersCompleted(
     const std::vector<ui::LatencyInfo>& latency_info) {
-  manager_->Send(new GpuHostMsg_FrameDrawn(latency_info));
+  stub_->SwapBuffersCompleted(latency_info);
 }
 
 void ImageTransportHelper::SetScheduled(bool is_scheduled) {
@@ -236,7 +236,7 @@ bool PassThroughImageTransportSurface::SwapBuffers() {
         ui::INPUT_EVENT_LATENCY_TERMINATED_FRAME_SWAP_COMPONENT, 0, 0);
   }
 
-  helper_->SendLatencyInfo(latency_info_);
+  helper_->SwapBuffersCompleted(latency_info_);
   latency_info_.clear();
   return result;
 }
@@ -250,7 +250,7 @@ bool PassThroughImageTransportSurface::PostSubBuffer(
         ui::INPUT_EVENT_LATENCY_TERMINATED_FRAME_SWAP_COMPONENT, 0, 0);
   }
 
-  helper_->SendLatencyInfo(latency_info_);
+  helper_->SwapBuffersCompleted(latency_info_);
   latency_info_.clear();
   return result;
 }