Provide real GPUSupport to ash for Chrome

ash/test/test_shell_delegate.cc

Index: ash/test/test_shell_delegate.cc
diff --git a/ash/test/test_shell_delegate.cc b/ash/test/test_shell_delegate.cc
index bc9ebcf5646f5bc2c1d3c36af438bce81d85fb23..d58c0617a35a749a0d121090ebe8ee9f426bebb1 100644
--- a/ash/test/test_shell_delegate.cc
+++ b/ash/test/test_shell_delegate.cc
@@ -8,6 +8,7 @@
 
 #include "ash/caps_lock_delegate_stub.h"
 #include "ash/default_accessibility_delegate.h"
+#include "ash/gpu_support_stub.h"
 #include "ash/host/root_window_host_factory.h"
 #include "ash/media_delegate.h"
 #include "ash/new_window_delegate.h"
@@ -150,6 +151,11 @@ WindowTreeHostFactory* TestShellDelegate::CreateWindowTreeHostFactory() {
   return WindowTreeHostFactory::Create();
 }
 
+GPUSupport* TestShellDelegate::CreateGPUSupport() {
+  // Real GPU support depends on src/content, so just use a stub.
+  return new GPUSupportStub;
+}
+
 base::string16 TestShellDelegate::GetProductName() const {
   return base::string16();
 }