Pull cacheinvalidations code directory into chromium repo.

third_party/cacheinvalidation/src/java/com/google/ipc/invalidation/external/client/types/Callback.java

Index: third_party/cacheinvalidation/src/java/com/google/ipc/invalidation/external/client/types/Callback.java
diff --git a/third_party/android_opengl/LICENSE b/third_party/cacheinvalidation/src/java/com/google/ipc/invalidation/external/client/types/Callback.java
similarity index 54%
copy from third_party/android_opengl/LICENSE
copy to third_party/cacheinvalidation/src/java/com/google/ipc/invalidation/external/client/types/Callback.java
index ea64da879f8a2132867c9523e6cef316e731e29e..a1296cddee746570f0a2ee337fb34bc81ee67935 100644
--- a/third_party/android_opengl/LICENSE
+++ b/third_party/cacheinvalidation/src/java/com/google/ipc/invalidation/external/client/types/Callback.java
@@ -1,15 +1,33 @@
 /*
- * Copyright (C) 2009 The Android Open Source Project
+ * Copyright 2011 Google Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
- *      http://www.apache.org/licenses/LICENSE-2.0
+ * http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * 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.
- */
+ */
+
+package com.google.ipc.invalidation.external.client.types;
+
+
+/**
+ * An interface to receive objects of a single type.
+ *
+ * @param <T> type of object received in the callback
+ *
+ */
+public interface Callback<T> {
+  /**
+   * Accepts the object provided by the caller.
+   *
+   * @param object received object
+   */
+  void accept(T object);
+}