Remove unused code in google_apis/gaia

chrome/chrome_tests_unit.gypi

 # Copyright 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.
 {
   'targets': [
     {
       # This target contains mocks and test utilities that don't belong in
       # production libraries but are used by more than one test executable.
       'target_name': 'test_support_common',
       'type': 'static_library',
@@ skipping 1676 matching lines @@
         '../google_apis/google_api_keys_unittest.cc',
         '../google_apis/gaia/mock_url_fetcher_factory.h',
         '../google_apis/gaia/gaia_auth_fetcher_unittest.cc',
         '../google_apis/gaia/gaia_auth_util_unittest.cc',
         '../google_apis/gaia/gaia_authenticator_unittest.cc',
         '../google_apis/gaia/gaia_oauth_client_unittest.cc',
         '../google_apis/gaia/google_service_auth_error_unittest.cc',
         '../google_apis/gaia/oauth_request_signer_unittest.cc',
         '../google_apis/gaia/oauth2_access_token_fetcher_unittest.cc',
         '../google_apis/gaia/oauth2_api_call_flow_unittest.cc',
-        '../google_apis/gaia/oauth2_mint_token_fetcher_unittest.cc',
         '../google_apis/gaia/oauth2_mint_token_flow_unittest.cc',
-        '../google_apis/gaia/oauth2_revocation_fetcher_unittest.cc',
         '../skia/ext/analysis_canvas_unittest.cc',
         '../skia/ext/bitmap_platform_device_mac_unittest.cc',
         '../skia/ext/convolver_unittest.cc',
         '../skia/ext/image_operations_unittest.cc',
         '../skia/ext/platform_canvas_unittest.cc',
         '../skia/ext/refptr_unittest.cc',
         '../skia/ext/skia_utils_ios_unittest.mm',
         '../skia/ext/skia_utils_mac_unittest.mm',
         '../skia/ext/vector_canvas_unittest.cc',
         '../testing/gtest_mac_unittest.mm',
@@ skipping 713 matching lines @@
               # more details.
               'DebugInformationFormat': '3',
               'ProgramDataBaseFileName': '<(PRODUCT_DIR)/unit_tests.exe.pdb',
             },
           },
         },
       ],
     }],
   ],  # 'conditions'
 }