WIP: Plumbing input event latency reporting through Mus GPU.

gpu/command_buffer/client/gles2_implementation.cc

Index: gpu/command_buffer/client/gles2_implementation.cc
diff --git a/gpu/command_buffer/client/gles2_implementation.cc b/gpu/command_buffer/client/gles2_implementation.cc
index fde1339e7f578cf12ab79fbbca90c78acff92b50..584353f07f26e4d8e0d8dfcf201880fb68cce162 100644
--- a/gpu/command_buffer/client/gles2_implementation.cc
+++ b/gpu/command_buffer/client/gles2_implementation.cc
@@ -6083,6 +6083,11 @@ void GLES2Implementation::SetErrorMessageCallback(
   error_message_callback_ = callback;
 }
 
+void GLES2Implementation::AddLatencyInfo(
+    const std::vector<ui::LatencyInfo>& latency_info) {
+  gpu_control_->AddLatencyInfo(latency_info);
+}
+
 void GLES2Implementation::SetLostContextCallback(
     const base::Closure& callback) {
   lost_context_callback_ = callback;