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

content/public/renderer/renderer_ppapi_host.h

 // 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.
 
 #ifndef CONTENT_PUBLIC_RENDERER_RENDERER_PPAPI_HOST_H_
 #define CONTENT_PUBLIC_RENDERER_RENDERER_PPAPI_HOST_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/platform_file.h"
+#include "base/process.h"
 #include "content/common/content_export.h"
 #include "ipc/ipc_platform_file.h"
 #include "ppapi/c/pp_instance.h"
 #include "webkit/plugins/ppapi/plugin_delegate.h"
 
 class FilePath;
 
 namespace gfx {
 class Point;
 }
@@ skipping 40 matching lines @@
   // module. |file_path| should identify the module. It is only used to report
   // failures to the renderer.
   // Returns a host if the external module is proxied successfully, otherwise
   // returns NULL.
   CONTENT_EXPORT static RendererPpapiHost* CreateExternalPluginModule(
       scoped_refptr<webkit::ppapi::PluginModule> plugin_module,
       webkit::ppapi::PluginInstance* plugin_instance,
       const FilePath& file_path,
       ppapi::PpapiPermissions permissions,
       const IPC::ChannelHandle& channel_handle,
+      base::ProcessId plugin_pid,
       int plugin_child_id);
 
   // Returns the RendererPpapiHost associated with the given PP_Instance,
   // or NULL if the instance is invalid.
   CONTENT_EXPORT static RendererPpapiHost* GetForPPInstance(
       PP_Instance instance);
 
   // Returns the PpapiHost object.
   virtual ppapi::host::PpapiHost* GetPpapiHost() = 0;
 
@@ skipping 54 matching lines @@
   // Returns true if the plugin is running in process.
   virtual bool IsRunningInProcess() const = 0;
 
  protected:
   virtual ~RendererPpapiHost() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_RENDERER_RENDERER_PPAPI_HOST_H_