[CacheStorage] Give cache directories unique names

content/content_tests.gypi

 # Copyright (c) 2013 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.
 
 {
   'variables': {
     'layouttest_support_content_sources': [
       'public/test/layouttest_support.h',
       'public/test/nested_message_pump_android.cc',
       'public/test/nested_message_pump_android.h',
@@ skipping 998 matching lines @@
           ],
         }],
       ],
     },
     {
       # GN version: //content/test:content_unittests
       'target_name': 'content_unittests',
       'type': '<(gtest_target_type)',
       'dependencies': [
         'browser/background_sync/background_sync_proto.gyp:background_sync_proto',
+        'browser/cache_storage/cache_storage_proto.gyp:cache_storage_proto',
         'browser/notifications/notification_proto.gyp:notification_proto',
         'browser/service_worker/service_worker_proto.gyp:service_worker_proto',
         'browser/speech/proto/speech_proto.gyp:speech_proto',
         'content.gyp:content_browser',
         'content.gyp:content_common',
         'content_common_mojo_bindings.gyp:content_common_mojo_bindings',
         'test_support_content',
         '../base/base.gyp:test_support_base',
         '../crypto/crypto.gyp:crypto',
         '../device/battery/battery.gyp:device_battery',
@@ skipping 1117 matching lines @@
             ],
           },
           'includes': [
             '../build/host_jar.gypi',
           ],
         },
       ],
     }],
   ],
 }