Prevent CopyOutputRequest from crashing when using surfaces.

content/browser/compositor/delegated_frame_host.cc

Index: content/browser/compositor/delegated_frame_host.cc
diff --git a/content/browser/compositor/delegated_frame_host.cc b/content/browser/compositor/delegated_frame_host.cc
index d416ae8a5182e03b8f6ab5a2bd2cec36034d75e5..3e115ca48040ff60b2ee86fdde0987b9529155ea 100644
--- a/content/browser/compositor/delegated_frame_host.cc
+++ b/content/browser/compositor/delegated_frame_host.cc
@@ -127,7 +127,12 @@ bool DelegatedFrameHost::ShouldCreateResizeLock() {
 
 void DelegatedFrameHost::RequestCopyOfOutput(
     scoped_ptr<cc::CopyOutputRequest> request) {
-  client_->GetLayer()->RequestCopyOfOutput(request.Pass());
+  if (use_surfaces_) {
+    // TODO(jbauman): Make this work with surfaces.
+    request->SendEmptyResult();
+  } else {
+    client_->GetLayer()->RequestCopyOfOutput(request.Pass());
+  }
 }
 
 void DelegatedFrameHost::CopyFromCompositingSurface(