Add a scoper object for URLFetcher::Factory

chrome/browser/policy/device_management_service_unittest.cc

Index: chrome/browser/policy/device_management_service_unittest.cc
diff --git a/chrome/browser/policy/device_management_service_unittest.cc b/chrome/browser/policy/device_management_service_unittest.cc
index 01f6740285a3d9af077d94e50f72ab96bbbd15b4..0c3c24227ce9312ec5f2e2a2a2f7cee58fc3d0d9 100644
--- a/chrome/browser/policy/device_management_service_unittest.cc
+++ b/chrome/browser/policy/device_management_service_unittest.cc
@@ -11,7 +11,7 @@
 #include "chrome/browser/policy/device_management_service.h"
 #include "chrome/browser/policy/proto/device_management_constants.h"
 #include "content/browser/browser_thread.h"
-#include "content/common/test_url_fetcher_factory.h"
+#include "content/test/test_url_fetcher_factory.h"
 #include "net/base/escape.h"
 #include "net/url_request/url_request_status.h"
 #include "net/url_request/url_request_test_util.h"
@@ -50,15 +50,11 @@ class DeviceManagementServiceTestBase : public TESTBASE {
     InitializeService();
   }
 
-  virtual void SetUp() {
-    URLFetcher::set_factory(&factory_);
-  }
-
   virtual void TearDown() {
-    URLFetcher::set_factory(NULL);
     backend_.reset();
     service_.reset();
     loop_.RunAllPending();
+    TESTBASE::TearDown();
   }
 
   void ResetService() {