Fix GetAMDVideoCardInfo() linkage for Chrome non-Official builds.

gpu/config/gpu_info_collector_win.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 "gpu/config/gpu_info_collector.h"
 
 // This has to be included before windows.h.
 #include "third_party/re2/re2/re2.h"
 
 #include <windows.h>
@@ skipping 342 matching lines @@
 // the UMA stats. Records no stats when D3D11 in not supported at all.
 void CollectD3D11Support() {
   // D3D11 takes about 50ms to initialize so do this on a worker thread.
   base::WorkerPool::PostTask(
       FROM_HERE,
       base::Bind(CollectD3D11SupportOnWorkerThread),
       false);
 }
 }  // namespace anonymous
 
-#if !defined(GOOGLE_CHROME_BUILD)
+#if defined(GOOGLE_CHROME_BUILD) && defined(OFFICIAL_BUILD)
+// This function has a real implementation for official builds that can
+// be found in src/third_party/amd.
+void GetAMDVideocardInfo(GPUInfo* gpu_info);
+#else
 void GetAMDVideocardInfo(GPUInfo* gpu_info) {
   DCHECK(gpu_info);
   return;
 }
-#else
-// This function has a real implementation for official builds that can
-// be found in src/third_party/amd.
-void GetAMDVideocardInfo(GPUInfo* gpu_info);
 #endif
 
 bool CollectDriverInfoD3D(const std::wstring& device_id,
                           GPUInfo* gpu_info) {
   TRACE_EVENT0("gpu", "CollectDriverInfoD3D");
 
   // create device info for the display device
   HDEVINFO device_info = SetupDiGetClassDevsW(
       NULL, device_id.c_str(), NULL,
       DIGCF_PRESENT | DIGCF_PROFILE | DIGCF_ALLCLASSES);
@@ skipping 269 matching lines @@
     basic_gpu_info->software_rendering = true;
     return;
   }
 
   MergeGPUInfoGL(basic_gpu_info, context_gpu_info);
 
   basic_gpu_info->dx_diagnostics = context_gpu_info.dx_diagnostics;
 }
 
 }  // namespace gpu