Revert of Require WebLocalFrame to be created with a non-null client

content/test/mock_webframeclient.h

Index: content/test/mock_webframeclient.h
diff --git a/content/test/mock_webframeclient.h b/content/test/mock_webframeclient.h
new file mode 100644
index 0000000000000000000000000000000000000000..bba8aa5c5e69a910d080b91210014d8554509c15
--- /dev/null
+++ b/content/test/mock_webframeclient.h
@@ -0,0 +1,16 @@
+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_TEST_MOCK_WEBFRAMECLIENT_H_
+#define CONTENT_TEST_MOCK_WEBFRAMECLIENT_H_
+
+#include "third_party/WebKit/public/web/WebFrameClient.h"
+
+namespace content {
+
+class MockWebFrameClient : public blink::WebFrameClient {};
+
+}  // namespace content
+
+#endif  // CONTENT_TEST_MOCK_WEBFRAMECLIENT_H_