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

chrome/browser/task_manager/task_manager.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 "chrome/browser/task_manager/task_manager.h"
 
 #include "base/compiler_specific.h"
 #include "base/i18n/number_formatting.h"
 #include "base/i18n/rtl.h"
 #include "base/process_util.h"
@@ skipping 833 matching lines @@
                                     param.routing_id);
     if (resource)
       break;
   }
 
   if (resource == NULL) {
     // We can't match a resource to the notification.  That might mean the
     // tab that started a download was closed, or the request may have had
     // no originating resource associated with it in the first place.
     // We attribute orphaned/unaccounted activity to the Browser process.
-    int browser_pid = base::GetCurrentProcId();
-    CHECK(param.origin_child_id != browser_pid);
-    param.origin_child_id = browser_pid;
-    param.render_process_host_child_id = param.routing_id = -1;
+    // TODO(wez): Better results could be achieved by checking with the
+    // ResourceProviders in decreasing order of specialisation, with the
+    // Renderer and Browser resources last, so that fall-back is implicit.
+    CHECK(param.origin_child_id != (-1));
+    param.origin_child_id =
+      param.render_process_host_child_id =
+      param.routing_id = -1;
     BytesRead(param);
     return;
   }
 
   // We do support network usage, mark the resource as such so it can report 0
   // instead of N/A.
   if (!resource->SupportNetworkUsage())
     resource->SetSupportNetworkUsage();
 
   ResourceValueMap::const_iterator iter_res =
@@ skipping 170 matching lines @@
   MetricsMap::const_iterator iter = metrics_map_.find(handle);
   if (iter == metrics_map_.end())
     return false;
 
   if (!iter->second->GetMemoryBytes(&usage->first, &usage->second))
     return false;
 
   memory_usage_map_.insert(std::make_pair(handle, *usage));
   return true;
 }