Fix bug whereby OnGpuSwitched was never called

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 <algorithm>
 #include <iterator>
 #include <memory>
 #include <utility>
@@ skipping 242 matching lines @@
     return; // This call contains no information about the display change
 
   GpuDataManagerImpl* manager =
       reinterpret_cast<GpuDataManagerImpl*>(gpu_data_manager);
   DCHECK(manager);
 
   bool gpu_changed = false;
   if (flags & kCGDisplayAddFlag) {
     gpu::GPUInfo gpu_info;
     if (gpu::CollectBasicGraphicsInfo(&gpu_info) == gpu::kCollectInfoSuccess) {
-      gpu_changed = manager->UpdateActiveGpu(gpu_info.gpu.vendor_id,
-                                             gpu_info.gpu.device_id);
+      gpu_changed = manager->UpdateActiveGpu(gpu_info.active_gpu().vendor_id,
+                                             gpu_info.active_gpu().device_id);
     }
   }
 
   if (gpu_changed)
     manager->HandleGpuSwitch();
 }
 #endif  // OS_MACOSX
 
 // Block all domains' use of 3D APIs for this many milliseconds if
 // approaching a threshold where system stability might be compromised.
@@ skipping 1127 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