Add the "virtual" keyword on method overrides that are missing it.

chrome/browser/task_manager/task_manager_resource_providers.cc

 // 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.
 
 #include "chrome/browser/task_manager/task_manager_resource_providers.h"
 
 #include "build/build_config.h"
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
@@ skipping 666 matching lines @@
       return TaskManager::Resource::ZYGOTE;
     case ChildProcessInfo::SANDBOX_HELPER_PROCESS:
       return TaskManager::Resource::SANDBOX_HELPER;
     case ChildProcessInfo::GPU_PROCESS:
       return TaskManager::Resource::GPU;
     default:
       return TaskManager::Resource::UNKNOWN;
   }
 }
 
+bool TaskManagerChildProcessResource::SupportNetworkUsage() const {
+  return network_usage_support_;
+}
+
+void TaskManagerChildProcessResource::SetSupportNetworkUsage() {
+  network_usage_support_ = true;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // TaskManagerChildProcessResourceProvider class
 ////////////////////////////////////////////////////////////////////////////////
 
 TaskManagerChildProcessResourceProvider::
     TaskManagerChildProcessResourceProvider(TaskManager* task_manager)
     : updating_(false),
       task_manager_(task_manager) {
 }
 
@@ skipping 558 matching lines @@
 
   return &resource_;
 }
 
 void TaskManagerBrowserProcessResourceProvider::StartUpdating() {
   task_manager_->AddResource(&resource_);
 }
 
 void TaskManagerBrowserProcessResourceProvider::StopUpdating() {
 }