Remove all uses of the global Dispatcher Get function.

ppapi/proxy/ppp_class_proxy.cc

Index: ppapi/proxy/ppp_class_proxy.cc
===================================================================
--- ppapi/proxy/ppp_class_proxy.cc	(revision 73960)
+++ ppapi/proxy/ppp_class_proxy.cc	(working copy)
@@ -192,14 +192,6 @@
   return var->CreateObject(module_id, &class_interface, object_proxy);
 }
 
-const void* PPP_Class_Proxy::GetSourceInterface() const {
-  return &class_interface;
-}
-
-InterfaceID PPP_Class_Proxy::GetInterfaceId() const {
-  return INTERFACE_ID_PPP_CLASS;
-}
-
 bool PPP_Class_Proxy::OnMessageReceived(const IPC::Message& msg) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(PPP_Class_Proxy, msg)