Remove all uses of the global Dispatcher Get function.

ppapi/proxy/ppb_url_response_info_proxy.h

Index: ppapi/proxy/ppb_url_response_info_proxy.h
===================================================================
--- ppapi/proxy/ppb_url_response_info_proxy.h	(revision 74021)
+++ ppapi/proxy/ppb_url_response_info_proxy.h	(working copy)
@@ -25,6 +25,8 @@
                             const void* target_interface);
   virtual ~PPB_URLResponseInfo_Proxy();
 
+  static const Info* GetInfo();
+
   // URLResponseInfo objects are actually created and returned by the
   // URLLoader. This function allows the URLLoader to convert a new
   // HostResource representing a response info to a properly tracked
@@ -37,8 +39,6 @@
   }
 
   // InterfaceProxy implementation.
-  virtual const void* GetSourceInterface() const;
-  virtual InterfaceID GetInterfaceId() const;
   virtual bool OnMessageReceived(const IPC::Message& msg);
 
  private: