Windows: Only collect D3D11 UMA stats if the GPU process launches and initializes successfully.

content/gpu/gpu_info_collector.h

 // 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.
 
 #ifndef CONTENT_GPU_GPU_INFO_COLLECTOR_H_
 #define CONTENT_GPU_GPU_INFO_COLLECTOR_H_
 
 #include "base/basictypes.h"
 #include "build/build_config.h"
 #include "content/common/content_export.h"
 #include "content/public/common/gpu_info.h"
 
 namespace gpu_info_collector {
 
+// Advanced Micro Devices has interesting configurations on laptops were
+// there are two videocards that can alternatively a given process output.
+enum AMDVideoCardType {
+  UNKNOWN,
+  STANDALONE,
+  INTEGRATED,
+  SWITCHABLE
+};
+
 // Collect GPU vendor_id and device ID.
 CONTENT_EXPORT bool CollectGpuID(uint32* vendor_id, uint32* device_id);
 
 // Collects basic GPU info without creating a GL/DirectX context (and without
 // the danger of crashing), including vendor_id and device_id.
 // This is called at browser process startup time.
 // The subset each platform collects may be different.
 CONTENT_EXPORT bool CollectBasicGraphicsInfo(
     content::GPUInfo* gpu_info);
 
@@ skipping 16 matching lines @@
 // Merge GPUInfo from CollectContextGraphicsInfo into basic GPUInfo.
 // This is platform specific, depending on which info are collected at which
 // stage.
 void MergeGPUInfo(content::GPUInfo* basic_gpu_info,
                   const content::GPUInfo& context_gpu_info);
 
 // MergeGPUInfo() when GL driver is used.
 void MergeGPUInfoGL(content::GPUInfo* basic_gpu_info,
                     const content::GPUInfo& context_gpu_info);
 
-// Advanced Micro Devices has interesting configurations on laptops were
-// there are two videocards that can alternatively a given process output.
-enum AMDVideoCardType {
-  UNKNOWN,
-  STANDALONE,
-  INTEGRATED,
-  SWITCHABLE
-};
+#if defined(OS_WIN)
+// Collects information about the level of D3D11 support and records it in
+// the UMA stats. Records no stats when D3D11 in not supported at all.
+void CollectD3D11Support();
+#endif
 
 }  // namespace gpu_info_collector
 
 #endif  // CONTENT_GPU_GPU_INFO_COLLECTOR_H_