Unrevert 58354, reland PPAPI with the instance test disabled.

remoting/client/plugin/pepper_entrypoints.cc

 // Copyright (c) 2010 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.
 
 #include "remoting/client/plugin/pepper_entrypoints.h"
 
 #include "base/message_loop.h"
 #include "remoting/client/plugin/chromoting_instance.h"
 #include "third_party/ppapi/c/pp_errors.h"
 #include "third_party/ppapi/c/pp_instance.h"
@@ skipping 38 matching lines @@
 }
 
 void PPP_ShutdownModule() {
   delete pp::Module::Get();
   g_module_singleton = NULL;
 }
 
 const void* PPP_GetInterface(const char* interface_name) {
   if (!pp::Module::Get())
     return NULL;
-  return pp::Module::Get()->GetInstanceInterface(interface_name);
+  return pp::Module::Get()->GetPluginInterface(interface_name);
 }
 
 }  // namespace remoting