Move platform_thread to base/threading and put in the base namespace. I left ...

chrome/test/automation/proxy_launcher.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/test/automation/proxy_launcher.h"
 
+#include "base/threading/platform_thread.h"
 #include "chrome/common/automation_constants.h"
 #include "chrome/common/logging_chrome.h"
 #include "chrome/test/automation/automation_proxy.h"
 #include "chrome/test/ui/ui_test.h"
 
 // Default path of named testing interface.
 static const char kInterfacePath[] = "/var/tmp/ChromeTestingInterface";
 
 // NamedProxyLauncher functions
 
@@ skipping 13 matching lines @@
 }
 
 void NamedProxyLauncher::InitializeConnection(UITestBase* ui_test_base) const {
   if (launch_browser_) {
     // Set up IPC testing interface as a client.
     ui_test_base->LaunchBrowser();
 
     // Wait for browser to be ready for connections.
     struct stat file_info;
     while (stat(kInterfacePath, &file_info))
-      PlatformThread::Sleep(automation::kSleepTime);
+      base::PlatformThread::Sleep(automation::kSleepTime);
   }
 
   ui_test_base->ConnectToRunningBrowser();
 }
 
 std::string NamedProxyLauncher::PrefixedChannelID() const {
   std::string channel_id;
   channel_id.append(automation::kNamedInterfacePrefix).append(channel_id_);
   return channel_id;
 }
@@ skipping 15 matching lines @@
 
 void AnonymousProxyLauncher::InitializeConnection(
     UITestBase* ui_test_base) const {
   ui_test_base->LaunchBrowserAndServer();
 }
 
 std::string AnonymousProxyLauncher::PrefixedChannelID() const {
   return channel_id_;
 }