Rolled cache invalidation library to @21 to fix windows warnings.

third_party/cacheinvalidation/cacheinvalidation.gyp

 # Copyright (c) 2010 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.
 
 # TODO(akalin): Make it so that warnings are errors on Windows.
 # TODO(akalin): Clean up warnings on Windows.
 
 {
   'variables': {
     # The root directory for the proto files.
@@ skipping 68 matching lines @@
         '../../third_party/protobuf2/protobuf.gyp:protobuf_lite',
       ],
     },
     # The main cache invalidation library.  External clients should depend
     # only on this.
     {
       'target_name': 'cacheinvalidation',
       'type': '<(library)',
       'sources': [
         'overrides/google/cacheinvalidation/callback.h',
+        'overrides/google/cacheinvalidation/compiler-specific.h',
         'overrides/google/cacheinvalidation/googletest.h',
         'overrides/google/cacheinvalidation/logging.h',
         'overrides/google/cacheinvalidation/mutex.h',
         'overrides/google/cacheinvalidation/stl-namespace.h'
         'overrides/google/cacheinvalidation/string_util.h'
         'overrides/google/cacheinvalidation/time.h',
         'files/src/google/cacheinvalidation/invalidation-client-impl.cc',
         'files/src/google/cacheinvalidation/invalidation-client-impl.h',
         'files/src/google/cacheinvalidation/invalidation-client.cc',
         'files/src/google/cacheinvalidation/invalidation-client.h',
@@ skipping 44 matching lines @@
       ],
     },
   ],
 }
 
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 # tab-width:2
 # indent-tabs-mode:nil
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 # vim: set expandtab tabstop=2 shiftwidth=2: