Pull cacheinvalidations code directory into chromium repo.

third_party/cacheinvalidation/README.chromium

Index: third_party/cacheinvalidation/README.chromium
diff --git a/third_party/cacheinvalidation/README.chromium b/third_party/cacheinvalidation/README.chromium
index 03444b95a7c44a6ad6b656ea1f91932dc72e5f37..4259807ecf29e32428ea092d4ba4ac798525a290 100644
--- a/third_party/cacheinvalidation/README.chromium
+++ b/third_party/cacheinvalidation/README.chromium
@@ -1,24 +1,13 @@
 Name: Google Cache Invalidation API
 Short Name: google-cache-invalidation-api
-URL: http://code.google.com/p/google-cache-invalidation-api/
-Version: r341
+URL: n/a
+Version: unknown
 License: Apache 2.0
 License File: src/google/cacheinvalidation/COPYING
 Security Critical: no
 
 Description:
-This is the API to talk to the Google Cache Invalidation service.
-
-Local Modifications:
-None.
-
-Note: If you are rolling forward the Cache Invalidation API version, and want to
-check if any changes need to be made to cacheinvalidation.gyp, do the following:
-
-  cd src/third_party/cacheinvalidation/src
-  git remote update
-  git diff --diff-filter=ACDR --name-only origin/master | grep -v ^java/
-
-This should give you a list of relevant files that were added, copied, renamed
-or deleted upstream. You will likely need to make appropriate changes to
-cacheinvalidation.gyp to keep the build green.
+This is the API to talk to the Google Cache Invalidation service, used by the
+invalidations consumed by Sync, Enterprise Policy, and other services. It was
+previously hosted at http://code.google.com/p/google-cache-invalidation-api/
+but was merged into the Chromium repository at r342.