Move EmptyString, kWhitespace and the BOM to base.

chrome/browser/chromeos/settings/device_settings_test_helper.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_SETTINGS_DEVICE_SETTINGS_TEST_HELPER_H_
 #define CHROME_BROWSER_CHROMEOS_SETTINGS_DEVICE_SETTINGS_TEST_HELPER_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 51 matching lines @@
   }
   void set_policy_blob(const std::string& policy_blob) {
     device_policy_.policy_blob_ = policy_blob;
   }
 
   const std::string& device_local_account_policy_blob(
       const std::string& id) const {
     const std::map<std::string, PolicyState>::const_iterator entry =
         device_local_account_policy_.find(id);
     return entry == device_local_account_policy_.end() ?
-        EmptyString() : entry->second.policy_blob_;
+        base::EmptyString() : entry->second.policy_blob_;
   }
 
   void set_device_local_account_policy_blob(const std::string& id,
                                             const std::string& policy_blob) {
     device_local_account_policy_[id].policy_blob_ = policy_blob;
   }
 
   // SessionManagerClient:
   virtual void Init(dbus::Bus* bus) OVERRIDE;
   virtual void AddObserver(Observer* observer) OVERRIDE;
@@ skipping 97 matching lines @@
   // with the global instance (DeviceSettingsService::Get()).
   DeviceSettingsService device_settings_service_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DeviceSettingsTestBase);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_SETTINGS_DEVICE_SETTINGS_TEST_HELPER_H_