Allow requesting a copy of a surface.

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 488b138b772e158b706c4e870f7a43c45bc738ae..26a0b297369768c0872fcf15191a3f16f6780392 100644
--- a/content/browser/compositor/delegated_frame_host.cc
+++ b/content/browser/compositor/delegated_frame_host.cc
@@ -131,8 +131,10 @@ bool DelegatedFrameHost::ShouldCreateResizeLock() {
 void DelegatedFrameHost::RequestCopyOfOutput(
     scoped_ptr<cc::CopyOutputRequest> request) {
   if (use_surfaces_) {
-    // TODO(jbauman): Make this work with surfaces.
-    request->SendEmptyResult();
+    if (surface_factory_ && !surface_id_.is_null())
+      surface_factory_->RequestCopyOfSurface(surface_id_, request.Pass());
+    else
+      request->SendEmptyResult();
   } else {
     client_->GetLayer()->RequestCopyOfOutput(request.Pass());
   }