Disallow gpu access if preliminary gpu info collection fails.

content/browser/gpu/gpu_data_manager.cc

Index: content/browser/gpu/gpu_data_manager.cc
===================================================================
--- content/browser/gpu/gpu_data_manager.cc	(revision 93215)
+++ content/browser/gpu/gpu_data_manager.cc	(working copy)
@@ -47,7 +47,8 @@
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   GPUInfo gpu_info;
-  gpu_info_collector::CollectPreliminaryGraphicsInfo(&gpu_info);
+  allows_gpu_access_ =
+      gpu_info_collector::CollectPreliminaryGraphicsInfo(&gpu_info);
   UpdateGpuInfo(gpu_info);
 
 #if defined(OS_MACOSX)
@@ -142,6 +143,8 @@
 }
 
 bool GpuDataManager::GpuAccessAllowed() {
+  if (!allows_gpu_access_)
+    return false;
   // We only need to block GPU process if more features are disallowed other
   // than those in the preliminary gpu feature flags because the latter work
   // through renderer commandline switches.