Wait for the GPU info to be collected.

chrome/browser/gpu_process_host_ui_shim.cc

 // Copyright (c) 2010 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 "chrome/browser/gpu_process_host_ui_shim.h"
 
 #include "chrome/browser/browser_thread.h"
 #include "chrome/browser/gpu_process_host.h"
 #include "chrome/browser/renderer_host/render_view_host.h"
 #include "chrome/common/child_process_logging.h"
@@ skipping 86 matching lines @@
 }
 
 const GPUInfo& GpuProcessHostUIShim::gpu_info() const {
   DCHECK(CalledOnValidThread());
   return gpu_info_;
 }
 
 void GpuProcessHostUIShim::OnGraphicsInfoCollected(const GPUInfo& gpu_info) {
   gpu_info_ = gpu_info;
   child_process_logging::SetGpuInfo(gpu_info);
+
+  // Used only in testing.
+  if (gpu_info_collected_callback_.get())
+    gpu_info_collected_callback_->Run();
 }
 
 void GpuProcessHostUIShim::OnScheduleComposite(int renderer_id,
     int render_view_id) {
   RenderViewHost* host = RenderViewHost::FromID(renderer_id,
                                                 render_view_id);
   if (!host) {
     return;
   }
   host->ScheduleComposite();
 }
 void GpuProcessHostUIShim::OnControlMessageReceived(
     const IPC::Message& message) {
   DCHECK(CalledOnValidThread());
 
   IPC_BEGIN_MESSAGE_MAP(GpuProcessHostUIShim, message)
     IPC_MESSAGE_HANDLER(GpuHostMsg_GraphicsInfoCollected,
                         OnGraphicsInfoCollected)
 #if defined(OS_WIN)
     IPC_MESSAGE_HANDLER(GpuHostMsg_ScheduleComposite,
                         OnScheduleComposite);
 #endif
     IPC_MESSAGE_UNHANDLED_ERROR()
   IPC_END_MESSAGE_MAP()
 }