Pull cacheinvalidations code directory into chromium repo.

third_party/cacheinvalidation/src/google/cacheinvalidation/deps/mutex.h

Index: third_party/cacheinvalidation/src/google/cacheinvalidation/deps/mutex.h
diff --git a/chrome/third_party/chromevox/LICENSE b/third_party/cacheinvalidation/src/google/cacheinvalidation/deps/mutex.h
similarity index 66%
copy from chrome/third_party/chromevox/LICENSE
copy to third_party/cacheinvalidation/src/google/cacheinvalidation/deps/mutex.h
index 6766c3fe34bea439c8cbab3048d38b64db7904c2..f78c759b7db447dfd91dbf5738913a4be933efa2 100644
--- a/chrome/third_party/chromevox/LICENSE
+++ b/third_party/cacheinvalidation/src/google/cacheinvalidation/deps/mutex.h
@@ -1,4 +1,4 @@
-// Copyright 2013 Google Inc.
+// Copyright 2012 Google Inc.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -11,3 +11,16 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
+
+#ifndef GOOGLE_CACHEINVALIDATION_DEPS_MUTEX_H_
+#define GOOGLE_CACHEINVALIDATION_DEPS_MUTEX_H_
+
+#include "base/mutex.h"
+
+namespace invalidation {
+
+using ::Mutex;
+using ::MutexLock;
+}  // invalidation
+
+#endif  // GOOGLE_CACHEINVALIDATION_DEPS_MUTEX_H_