Fix Task Manager to correctly display network usage of plug-in processes.

chrome/common/render_messages_params.h

 // 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.
 
 #ifndef CHROME_COMMON_RENDER_MESSAGES_PARAMS_H_
 #define CHROME_COMMON_RENDER_MESSAGES_PARAMS_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 438 matching lines @@
   // The origin of the main frame (top-level frame) that is associated with this
   // request.  This is used to update our insecure content state.
   std::string main_frame_origin;
 
   // Additional HTTP request headers.
   std::string headers;
 
   // net::URLRequest load flags (0 by default).
   int load_flags;
 
-  // Unique ID of process that originated this request. For normal renderer
-  // requests, this will be the ID of the renderer. For plugin requests routed
-  // through the renderer, this will be the plugin's ID.
-  int origin_child_id;
+  // Process ID of the originator of this request.  For normal renderer requests
+  // this will be the render host process ID.  For plugin requests, it will be
+  // the plugin process ID.  The ResourceDispatcherHost will map the origin PID
+  // to the corresponding child ID upon receipt of this message.
+  int origin_pid;
 
   // What this resource load is for (main frame, sub-frame, sub-resource,
   // object).
   ResourceType::Type resource_type;
 
   // Used by plugin->browser requests to get the correct net::URLRequestContext.
   uint32 request_context;
 
   // Indicates which frame (or worker context) the request is being loaded into,
   // or kNoHostId.
@@ skipping 681 matching lines @@
 struct ParamTraits<ViewHostMsg_AccessibilityNotification_Params> {
   typedef ViewHostMsg_AccessibilityNotification_Params param_type;
   static void Write(Message* m, const param_type& p);
   static bool Read(const Message* m, void** iter, param_type* p);
   static void Log(const param_type& p, std::string* l);
 };
 
 }  // namespace IPC
 
 #endif  // CHROME_COMMON_RENDER_MESSAGES_PARAMS_H_