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 94991a8573db36a09ae58927b15c59d2404c6555..a1062dd91ff4a74adb165fde2ed2738912c56d62 100644
--- a/content/common/gpu/image_transport_surface.cc
+++ b/content/common/gpu/image_transport_surface.cc
@@ -120,9 +120,9 @@ 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) {
@@ -245,7 +245,7 @@ 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;
 }
@@ -259,7 +259,7 @@ 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;
 }