Move GetDocument method from WebFrame to WebLocalFrame.

content/public/test/test_renderer_host.cc

Index: content/public/test/test_renderer_host.cc
diff --git a/content/public/test/test_renderer_host.cc b/content/public/test/test_renderer_host.cc
index a5b67e109974a86a6a6a24937a86909c5c0f8d43..2b67c292d7402995d63215c37fb5c548b523222b 100644
--- a/content/public/test/test_renderer_host.cc
+++ b/content/public/test/test_renderer_host.cc
@@ -58,6 +58,12 @@ RenderFrameHostTester* RenderFrameHostTester::For(RenderFrameHost* host) {
   return static_cast<TestRenderFrameHost*>(host);
 }
 
+// static
+bool RenderFrameHostTester::TestOnMessageReceived(RenderFrameHost* rfh,
+                                                  const IPC::Message& msg) {
+  return static_cast<RenderFrameHostImpl*>(rfh)->OnMessageReceived(msg);
+}
+
 // static
 void RenderFrameHostTester::CommitPendingLoad(
     NavigationController* controller) {