Enable ANGLE D3D11 runtime for Windows 7+.

content/browser/gpu/gpu_data_manager_impl_private.cc

Index: content/browser/gpu/gpu_data_manager_impl_private.cc
diff --git a/content/browser/gpu/gpu_data_manager_impl_private.cc b/content/browser/gpu/gpu_data_manager_impl_private.cc
index 398ef42ce9ce7a6502d09d141404ba5260f588ed..b13828b7f2578e7485e0d9f5ff6466b156414be0 100644
--- a/content/browser/gpu/gpu_data_manager_impl_private.cc
+++ b/content/browser/gpu/gpu_data_manager_impl_private.cc
@@ -660,6 +660,8 @@ void GpuDataManagerImplPrivate::AppendGpuCommandLine(
     command_line->AppendSwitch(switches::kDisableImageTransportSurface);
     reduce_sandbox = true;
   }
+  if (gpu_driver_bugs_.find(gpu::DISABLE_D3D11) != gpu_driver_bugs_.end())
+    command_line->AppendSwitch(switches::kDisableD3D11);
   if (use_swiftshader_) {
     command_line->AppendSwitchASCII(switches::kUseGL, "swiftshader");
     if (swiftshader_path.empty())