Remove GpuHostMsg_FrameDrawn and replace with client channel swap ack

content/browser/gpu/gpu_process_host_ui_shim.cc

Index: content/browser/gpu/gpu_process_host_ui_shim.cc
diff --git a/content/browser/gpu/gpu_process_host_ui_shim.cc b/content/browser/gpu/gpu_process_host_ui_shim.cc
index 36e39865de3eab148c96fed95103c7b70d3ac0f2..b7b63ff39a370cc3d87e1489d3dd03be3dbf7c45 100644
--- a/content/browser/gpu/gpu_process_host_ui_shim.cc
+++ b/content/browser/gpu/gpu_process_host_ui_shim.cc
@@ -212,7 +212,6 @@ bool GpuProcessHostUIShim::OnControlMessageReceived(
                         OnGraphicsInfoCollected)
     IPC_MESSAGE_HANDLER(GpuHostMsg_VideoMemoryUsageStats,
                         OnVideoMemoryUsageStatsReceived);
-    IPC_MESSAGE_HANDLER(GpuHostMsg_FrameDrawn, OnFrameDrawn)
 
     IPC_MESSAGE_UNHANDLED_ERROR()
   IPC_END_MESSAGE_MAP()
@@ -274,14 +273,6 @@ void GpuProcessHostUIShim::OnAcceleratedSurfaceBuffersSwapped(
 #endif
 }
 
-void GpuProcessHostUIShim::OnFrameDrawn(
-    const std::vector<ui::LatencyInfo>& latency_info) {
-  if (!ui::LatencyInfo::Verify(latency_info,
-                               "GpuProcessHostUIShim::OnFrameDrawn"))
-    return;
-  RenderWidgetHostImpl::CompositorFrameDrawn(latency_info);
-}
-
 void GpuProcessHostUIShim::OnVideoMemoryUsageStatsReceived(
     const GPUVideoMemoryUsageStats& video_memory_usage_stats) {
   GpuDataManagerImpl::GetInstance()->UpdateVideoMemoryUsageStats(