Ensure that PP_Instance values are unique within a plugin process in addition...

webkit/plugins/ppapi/ppb_proxy_impl.cc

 // Copyright (c) 2011 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 "webkit/plugins/ppapi/ppb_proxy_impl.h"
 
 #include "ppapi/c/private/ppb_proxy_private.h"
 #include "webkit/plugins/ppapi/plugin_module.h"
 #include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
 #include "webkit/plugins/ppapi/resource.h"
@@ skipping 10 matching lines @@
     plugin_module->PluginCrashed();
 }
 
 PP_Instance GetInstanceForResource(PP_Resource resource) {
   scoped_refptr<Resource> obj(ResourceTracker::Get()->GetResource(resource));
   if (!obj)
     return 0;
   return obj->instance()->pp_instance();
 }
 
+void SetReserveInstanceIDCallback(PP_Module module,
+                                  PP_Bool (*reserve)(PP_Module, PP_Instance)) {
+  PluginModule* plugin_module = ResourceTracker::Get()->GetModule(module);
+  if (plugin_module)
+    plugin_module->SetReserveInstanceIDCallback(reserve);
+}
+
 const PPB_Proxy_Private ppb_proxy = {
   &PluginCrashed,
-  &GetInstanceForResource
+  &GetInstanceForResource,
+  &SetReserveInstanceIDCallback
 };
 
 }  // namespace
 
 // static
 const PPB_Proxy_Private* PPB_Proxy_Impl::GetInterface() {
   return &ppb_proxy;
 }
 
 }  // namespace ppapi
 }  // namespace webkit