Use an explicit PID for duplicating Pepper handles rather than the Channel's.

content/renderer/pepper/renderer_ppapi_host_impl.cc

 // 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.
 
 #include "content/renderer/pepper/renderer_ppapi_host_impl.h"
 
 #include "base/file_path.h"
 #include "base/logging.h"
 #include "content/renderer/pepper/pepper_graphics_2d_host.h"
 #include "content/renderer/pepper/pepper_in_process_resource_creation.h"
@@ skipping 18 matching lines @@
 namespace content {
 
 // static
 CONTENT_EXPORT RendererPpapiHost*
 RendererPpapiHost::CreateExternalPluginModule(
     scoped_refptr<PluginModule> plugin_module,
     PluginInstance* plugin_instance,
     const FilePath& file_path,
     ppapi::PpapiPermissions permissions,
     const IPC::ChannelHandle& channel_handle,
+    base::ProcessId plugin_pid,
     int plugin_child_id) {
   RendererPpapiHost* renderer_ppapi_host = NULL;
   // Since we're the embedder, we can make assumptions about the delegate on
   // the instance.
   PepperPluginDelegateImpl* pepper_plugin_delegate =
       static_cast<PepperPluginDelegateImpl*>(plugin_instance->delegate());
   if (pepper_plugin_delegate) {
     renderer_ppapi_host = pepper_plugin_delegate->CreateExternalPluginModule(
         plugin_module,
         file_path,
         permissions,
         channel_handle,
+        plugin_pid,
         plugin_child_id);
   }
   return renderer_ppapi_host;
 }
 
 // static
 CONTENT_EXPORT RendererPpapiHost*
 RendererPpapiHost::GetForPPInstance(PP_Instance instance) {
   return RendererPpapiHostImpl::GetForPPInstance(instance);
 }
@@ skipping 197 matching lines @@
     PP_Instance pp_instance) const {
   PluginInstance* instance = HostGlobals::Get()->GetInstance(pp_instance);
   if (!instance)
     return NULL;
   if (instance->module() != module_)
     return NULL;
   return instance;
 }
 
 }  // namespace content