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

chrome/browser/task_manager/task_manager.h

 // 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.
 
 #ifndef CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_H_
 #define CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 327 matching lines @@
   ~TaskManagerModel();
 
   enum UpdateState {
     IDLE = 0,      // Currently not updating.
     TASK_PENDING,  // An update task is pending.
     STOPPING       // A update task is pending and it should stop the update.
   };
 
   // This struct is used to exchange information between the io and ui threads.
   struct BytesReadParam {
-    BytesReadParam(int origin_child_id,
+    BytesReadParam(int origin_pid,
                    int render_process_host_child_id,
                    int routing_id,
                    int byte_count)
-        : origin_child_id(origin_child_id),
+        : origin_pid(origin_pid),
           render_process_host_child_id(render_process_host_child_id),
           routing_id(routing_id),
           byte_count(byte_count) {}
 
-    // This is the child ID of the originator of the request. It will often be
-    // the same as the render_process_host_child_id, but will be different when
-    // another sub-process like a plugin is routing requests through a renderer.
-    int origin_child_id;
+    // The process ID that triggered the request.  For plugin requests this
+    // will differ from the renderer process ID.
+    int origin_pid;
 
-    // The child ID of the RenderProcessHist this request was routed through.
+    // The child ID of the RenderProcessHost this request was routed through.
     int render_process_host_child_id;
 
     int routing_id;
     int byte_count;
   };
 
   typedef std::vector<TaskManager::Resource*> ResourceList;
   typedef std::vector<TaskManager::ResourceProvider*> ResourceProviderList;
   typedef std::map<base::ProcessHandle, ResourceList*> GroupMap;
   typedef std::map<base::ProcessHandle, base::ProcessMetrics*> MetricsMap;
@@ skipping 85 matching lines @@
   // Whether we are currently in the process of updating.
   UpdateState update_state_;
 
   // A salt lick for the goats.
   int goat_salt_;
 
   DISALLOW_COPY_AND_ASSIGN(TaskManagerModel);
 };
 
 #endif  // CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_H_