drive: Rename 'gdata' namespace to 'drive' in chrome/browser/chromeos/drive

chrome/browser/chromeos/drive/mock_drive_cache_observer.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_DRIVE_MOCK_DRIVE_CACHE_OBSERVER_H_
 #define CHROME_BROWSER_CHROMEOS_DRIVE_MOCK_DRIVE_CACHE_OBSERVER_H_
 
 #include <string>
 
 #include "chrome/browser/chromeos/drive/drive_cache_observer.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
-namespace gdata {
+namespace drive {
 
 // Mock for DriveCache::Observer.
 class MockDriveCacheObserver : public DriveCacheObserver {
  public:
   MockDriveCacheObserver();
   virtual ~MockDriveCacheObserver();
 
   MOCK_METHOD2(OnCachePinned, void(const std::string& resource_id,
                                    const std::string& md5));
   MOCK_METHOD2(OnCacheUnpinned, void(const std::string& resource_id,
                                      const std::string& md5));
   MOCK_METHOD1(OnCacheCommitted, void(const std::string& resource_id));
 };
 
-}  // namespace gdata
+}  // namespace drive
 
 #endif  // CHROME_BROWSER_CHROMEOS_DRIVE_MOCK_DRIVE_CACHE_OBSERVER_H_