PPAPI: Refactor renderer side of browser host creation

content/renderer/pepper/mock_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_RENDERER_PEPPER_MOCK_RENDERER_PPAPI_HOST_H_
 #define CONTENT_RENDERER_PEPPER_MOCK_RENDERER_PPAPI_HOST_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/public/renderer/renderer_ppapi_host.h"
@@ skipping 32 matching lines @@
   bool HasUserGesture(PP_Instance instance) const override;
   int GetRoutingIDForWidget(PP_Instance instance) const override;
   gfx::Point PluginPointToRenderFrame(PP_Instance instance,
                                       const gfx::Point& pt) const override;
   IPC::PlatformFileForTransit ShareHandleWithRemote(
       base::PlatformFile handle,
       bool should_close_source) override;
   bool IsRunningInProcess() const override;
   std::string GetPluginName() const override;
   void SetToExternalPluginHost() override;
-  void CreateBrowserResourceHosts(
+  int32_t CreateBrowserResourceHosts(
       PP_Instance instance,
       const std::vector<IPC::Message>& nested_msgs,
-      const base::Callback<void(const std::vector<int>&)>& callback)
-      const override;
+      const ResourceHostCreationCallback& callback) const override;
   GURL GetDocumentURL(PP_Instance instance) const override;
 
  private:
   ppapi::proxy::ResourceMessageTestSink sink_;
   ppapi::host::PpapiHost ppapi_host_;
 
   RenderView* render_view_;
   PP_Instance pp_instance_;
 
   bool has_user_gesture_;
 
   scoped_ptr<FakePepperPluginInstance> plugin_instance_;
 
   DISALLOW_COPY_AND_ASSIGN(MockRendererPpapiHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_MOCK_RENDERER_PPAPI_HOST_H_