Move WebUI ownership from the RenderFrameHostManager to the RenderFrameHost.

content/browser/frame_host/render_frame_host_delegate.cc

Index: content/browser/frame_host/render_frame_host_delegate.cc
diff --git a/content/browser/frame_host/render_frame_host_delegate.cc b/content/browser/frame_host/render_frame_host_delegate.cc
index 1c8ecd9373fe0a18093bc08d4b41d06575a18829..9c538ff4a03b11b202b9ee435782b78dd8a9b29b 100644
--- a/content/browser/frame_host/render_frame_host_delegate.cc
+++ b/content/browser/frame_host/render_frame_host_delegate.cc
@@ -72,6 +72,11 @@ bool RenderFrameHostDelegate::ShouldRouteMessageEvent(
   return false;
 }
 
+scoped_ptr<WebUIImpl> RenderFrameHostDelegate::CreateWebUIForRenderManager(
+    const GURL& url) {
+  return nullptr;
+}
+
 #if defined(OS_WIN)
 gfx::NativeViewAccessible
     RenderFrameHostDelegate::GetParentNativeViewAccessible() {