Support exposing Mojo services between render frames, render threads, and their respective hosts.

content/public/renderer/render_frame.h

 // 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_PUBLIC_RENDERER_RENDER_FRAME_H_
 #define CONTENT_PUBLIC_RENDERER_RENDER_FRAME_H_
 
 #include "base/strings/string16.h"
 #include "content/common/content_export.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_sender.h"
 #include "third_party/WebKit/public/web/WebNavigationPolicy.h"
 
 struct WebPreferences;
 
 namespace blink {
 class WebFrame;
 class WebLocalFrame;
 class WebNode;
 class WebPlugin;
 class WebURLRequest;
 struct WebPluginParams;
 }
 
 namespace content {
 class ContextMenuClient;
 class RenderView;
+class ServiceRegistry;
 struct ContextMenuParams;
 struct WebPluginInfo;
 
 // This interface wraps functionality, which is specific to frames, such as
 // navigation. It provides communication with a corresponding RenderFrameHost
 // in the browser process.
 class CONTENT_EXPORT RenderFrame : public IPC::Listener,
                                    public IPC::Sender {
  public:
   // Returns the RenderFrame given a WebFrame.
@@ skipping 43 matching lines @@
   virtual void LoadURLExternally(blink::WebLocalFrame* frame,
                                  const blink::WebURLRequest& request,
                                  blink::WebNavigationPolicy policy) = 0;
 
   // Execute a string of JavaScript in this frame's context.
   virtual void ExecuteJavaScript(const base::string16& javascript) = 0;
 
   // Return true if this frame is hidden.
   virtual bool IsHidden() = 0;
 
+  // Returns the ServiceRegistry for this frame.
+  virtual ServiceRegistry* GetServiceRegistry() = 0;
+
  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_