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

BUG=34647
TEST=compiled on windows, verified there were no warnings

Review URL: http://codereview.chromium.org/2854011

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@50285 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -46,7 +46,7 @@ deps = {
     "http://protobuf.googlecode.com/svn/trunk@327",
 
   "src/third_party/cacheinvalidation/files":
-    "http://google-cache-invalidation-api.googlecode.com/svn/trunk@13",
+    "http://google-cache-invalidation-api.googlecode.com/svn/trunk@21",
 
   "src/tools/gyp":
     "http://gyp.googlecode.com/svn/trunk@826",

third_party/cacheinvalidation/cacheinvalidation.gyp

@@ -86,6 +86,7 @@
       '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',

third_party/cacheinvalidation/overrides/google/cacheinvalidation/compiler-specific.h

+// 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.
+
+#ifndef GOOGLE_CACHEINVALIDATION_COMPILER_SPECIFIC_H_
+#define GOOGLE_CACHEINVALIDATION_COMPILER_SPECIFIC_H_
+
+#include "base/compiler_specific.h"
+
+#endif  // GOOGLE_CACHEINVALIDATION_COMPILER_SPECIFIC_H_