Pepper: Log in UMA when an interface is used.

content/browser/renderer_host/pepper/browser_ppapi_host_impl.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_BROWSER_RENDERER_HOST_PEPPER_BROWSER_PPAPI_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_PEPPER_BROWSER_PPAPI_HOST_IMPL_H_
 
 #include <map>
 #include <string>
 
@@ skipping 80 matching lines @@
 
     // IPC::ChannelProxy::MessageFilter.
     virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
 
     void OnHostDestroyed();
 
    private:
     virtual ~HostMessageFilter();
 
     void OnKeepalive();
+    void OnHostMsgLogInterfaceUsage(int hash) const;
 
     // Non owning pointers cleared in OnHostDestroyed()
     ppapi::host::PpapiHost* ppapi_host_;
     BrowserPpapiHostImpl* browser_ppapi_host_impl_;
   };
 
   // Reports plugin activity to the callback set with SetOnKeepaliveCallback.
   void OnKeepalive();
 
   scoped_ptr<ppapi::host::PpapiHost> ppapi_host_;
@@ skipping 19 matching lines @@
   scoped_refptr<HostMessageFilter> message_filter_;
 
   BrowserPpapiHost::OnKeepaliveCallback on_keepalive_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserPpapiHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_PEPPER_BROWSER_PPAPI_HOST_IMPL_H_