Identify the active GPU using GL strings in multiple GPU situation.

content/browser/gpu/gpu_data_manager_impl_private.cc

 // Copyright (c) 2013 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 "content/browser/gpu/gpu_data_manager_impl_private.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
@@ skipping 464 matching lines @@
       !gpu_info_.gl_renderer.empty() ||
       !gpu_info_.gl_version.empty())
     return;
 
   gpu::GPUInfo gpu_info = gpu_info_;
 
   gpu_info.gl_vendor = gl_vendor;
   gpu_info.gl_renderer = gl_renderer;
   gpu_info.gl_version = gl_version;
 
+  gpu::IdentifyActiveGPU(&gpu_info);
   gpu::CollectDriverInfoGL(&gpu_info);
 
   UpdateGpuInfo(gpu_info);
   UpdateGpuSwitchingManager(gpu_info);
   UpdatePreliminaryBlacklistedFeatures();
 }
 
 void GpuDataManagerImplPrivate::GetGLStrings(std::string* gl_vendor,
                                              std::string* gl_renderer,
                                              std::string* gl_version) {
@@ skipping 729 matching lines @@
   gpu_info_.context_info_state = gpu::kCollectInfoFatalFailure;
 #if defined(OS_WIN)
   gpu_info_.dx_diagnostics_info_state = gpu::kCollectInfoFatalFailure;
 #endif
   complete_gpu_info_already_requested_ = true;
   // Some observers might be waiting.
   NotifyGpuInfoUpdate();
 }
 
 }  // namespace content