Create RenderFrame/RenderFrameHost for the main frame of a page.

content/public/renderer/render_frame.h

Index: content/public/renderer/render_frame.h
diff --git a/content/public/renderer/render_frame.h b/content/public/renderer/render_frame.h
new file mode 100644
index 0000000000000000000000000000000000000000..9ca30f48f43b06a527637efd7262950e68337d51
--- /dev/null
+++ b/content/public/renderer/render_frame.h
@@ -0,0 +1,27 @@
+// Copyright (c) 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_PUBLIC_RENDERER_RENDER_FRAME_H_
+#define CONTENT_PUBLIC_RENDERER_RENDER_FRAME_H_
+
+#include "content/common/content_export.h"
+#include "ipc/ipc_listener.h"
+#include "ipc/ipc_sender.h"
+
+namespace content {
+
+class CONTENT_EXPORT RenderFrame : public IPC::Listener,
+                                   public IPC::Sender {
+ protected:
+  virtual ~RenderFrame() {}
+
+ private:
+  // This interface should only be implemented inside content.
+  friend class RenderFrameImpl;
+  RenderFrame() {}
+};
+
+}  // namespace content
+
+#endif  // CONTENT_PUBLIC_RENDERER_RENDER_FRAME_H_