Track plugin input event latency

content/renderer/pepper/pepper_graphics_2d_host.cc

Index: content/renderer/pepper/pepper_graphics_2d_host.cc
diff --git a/content/renderer/pepper/pepper_graphics_2d_host.cc b/content/renderer/pepper/pepper_graphics_2d_host.cc
index 6cce27eea06ae231b091cb3597adcd7967420e28..d8c829b9f8be36481586d43d829a442ba6730e5a 100644
--- a/content/renderer/pepper/pepper_graphics_2d_host.cc
+++ b/content/renderer/pepper/pepper_graphics_2d_host.cc
@@ -228,8 +228,8 @@ int32_t PepperGraphics2DHost::OnResourceMessageReceived(
                                     OnHostMsgScroll)
   PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_Graphics2D_ReplaceContents,
                                     OnHostMsgReplaceContents)
-  PPAPI_DISPATCH_HOST_RESOURCE_CALL_0(PpapiHostMsg_Graphics2D_Flush,
-                                      OnHostMsgFlush)
+  PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_Graphics2D_Flush,
+                                    OnHostMsgFlush)
   PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_Graphics2D_SetScale,
                                     OnHostMsgSetScale)
   PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_Graphics2D_ReadImageData,
@@ -500,11 +500,15 @@ int32_t PepperGraphics2DHost::OnHostMsgReplaceContents(
 }
 
 int32_t PepperGraphics2DHost::OnHostMsgFlush(
-    ppapi::host::HostMessageContext* context) {
+    ppapi::host::HostMessageContext* context,
+    const std::vector<ui::LatencyInfo>& latency_info) {
   // Don't allow more than one pending flush at a time.
   if (HasPendingFlush())
     return PP_ERROR_INPROGRESS;
 
+  if (bound_instance_)
+    bound_instance_->AddLatencyInfo(latency_info);
+
   PP_Resource old_image_data = 0;
   flush_reply_context_ = context->MakeReplyMessageContext();
   if (is_running_in_process_)