Remove all uses of "using namespace std"

content/shell/renderer/test_runner/WebTask.cpp

 // Copyright 2013 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 "content/shell/renderer/test_runner/WebTask.h"
 
 #include <algorithm>
 #include "third_party/WebKit/public/web/WebKit.h"
 
-using namespace std;
-
 namespace content {
 
 WebTask::WebTask(WebTaskList* list)
     : m_taskList(list)
 {
     m_taskList->registerTask(this);
 }
 
 WebTask::~WebTask()
 {
@@ skipping 10 matching lines @@
     revokeAll();
 }
 
 void WebTaskList::registerTask(WebTask* task)
 {
     m_tasks.push_back(task);
 }
 
 void WebTaskList::unregisterTask(WebTask* task)
 {
-    vector<WebTask*>::iterator iter = find(m_tasks.begin(), m_tasks.end(), task);
+    std::vector<WebTask*>::iterator iter = std::find(m_tasks.begin(), m_tasks.end(), task);
     if (iter != m_tasks.end())
         m_tasks.erase(iter);
 }
 
 void WebTaskList::revokeAll()
 {
     while (!m_tasks.empty())
         m_tasks[0]->cancel();
 }
 
 }  // namespace content