Plumbing input event latency reporting through Mus GPU.

ppapi/proxy/ppapi_command_buffer_proxy.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ppapi/proxy/ppapi_command_buffer_proxy.h"
 
 #include <utility>
 
 #include "base/numerics/safe_conversions.h"
 #include "ppapi/proxy/ppapi_messages.h"
@@ skipping 210 matching lines @@
 
 bool PpapiCommandBufferProxy::CanWaitUnverifiedSyncToken(
     const gpu::SyncToken& sync_token) {
   return false;
 }
 
 int32_t PpapiCommandBufferProxy::GetExtraCommandBufferData() const {
   return 0;
 }
 
+void PpapiCommandBufferProxy::AddLatencyInfo(
+    const std::vector<ui::LatencyInfo>& latency_info) {}
+
 void PpapiCommandBufferProxy::SignalQuery(uint32_t query,
                                           const base::Closure& callback) {
   NOTREACHED();
 }
 
 void PpapiCommandBufferProxy::SetGpuControlClient(gpu::GpuControlClient*) {
   // TODO(piman): The lost context callback skips past here and goes directly
   // to the plugin instance. Make it more uniform and use the GpuControlClient.
 }
 
@@ skipping 68 matching lines @@
   message->set_unblock(true);
   Send(message);
 
   flush_info_->flush_pending = false;
   flush_info_->resource.SetHostResource(0, 0);
   flushed_fence_sync_release_ = pending_fence_sync_release_;
 }
 
 }  // namespace proxy
 }  // namespace ppapi