Pepper: Move FileRef to the "new" resource proxy.

content/public/renderer/renderer_ppapi_host.h

 // Copyright (c) 2012 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_RENDERER_PPAPI_HOST_H_
 #define CONTENT_PUBLIC_RENDERER_RENDERER_PPAPI_HOST_H_
 
 #include <vector>
 
 #include "base/callback_forward.h"
@@ skipping 31 matching lines @@
 class RenderView;
 
 // Interface that allows components in the embedder app to talk to the
 // PpapiHost in the renderer process.
 //
 // There will be one of these objects in the renderer per plugin module.
 class RendererPpapiHost {
  public:
   // Returns the RendererPpapiHost associated with the given PP_Instance,
   // or NULL if the instance is invalid.
+  //
+  // Do NOT use this when dealing with an "external plugin" that serves as a
+  // bootstrap to load a second plugin. This is because the two will share a
+  // PP_Instance, and the RendererPpapiHost* for the second plugin will be
+  // returned after we switch the proxy on.
   CONTENT_EXPORT static RendererPpapiHost* GetForPPInstance(
       PP_Instance instance);
 
   // Returns the PpapiHost object.
   virtual ppapi::host::PpapiHost* GetPpapiHost() = 0;
 
   // Returns true if the given PP_Instance is valid and belongs to the
   // plugin associated with this host.
   virtual bool IsValidInstance(PP_Instance instance) const = 0;
 
@@ skipping 61 matching lines @@
       const std::vector<IPC::Message>& nested_msgs,
       const base::Callback<void(const std::vector<int>&)>& callback) const = 0;
 
  protected:
   virtual ~RendererPpapiHost() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_RENDERER_RENDERER_PPAPI_HOST_H_