Pull cacheinvalidations code directory into chromium repo.

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

Index: third_party/cacheinvalidation/src/java/com/google/ipc/invalidation/external/client/types/ObjectId.java
diff --git a/third_party/cacheinvalidation/src/java/com/google/ipc/invalidation/external/client/types/ObjectId.java b/third_party/cacheinvalidation/src/java/com/google/ipc/invalidation/external/client/types/ObjectId.java
new file mode 100644
index 0000000000000000000000000000000000000000..2a6217ffdb95089f8b761565d553ae8cfdad6e72
--- /dev/null
+++ b/third_party/cacheinvalidation/src/java/com/google/ipc/invalidation/external/client/types/ObjectId.java
@@ -0,0 +1,85 @@
+/*
+ * 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
+ *
+ * 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;
+
+import com.google.ipc.invalidation.util.Preconditions;
+
+import java.util.Arrays;
+
+/**
+ * A class to represent a unique object id that an application can register or
+ * unregister for.
+ *
+ */
+public final class ObjectId {
+
+  /** The invalidation source type. */
+  private final int source;
+
+  /** The name/unique id for the object. */
+  private final byte[] name;
+
+  /**
+   * Creates an object id for the given {@code source} and id {@code name} (does not make a copy of
+   * the array).
+   */
+  public static ObjectId newInstance(int source, byte[] name) {
+    return new ObjectId(source, name);
+  }
+
+  /** Creates an object id for the given {@code source} and id {@code name}. */
+  private ObjectId(int source, byte[] name) {
+    Preconditions.checkState(source >= 0, "source");
+    this.source = source;
+    this.name = Preconditions.checkNotNull(name, "name");
+  }
+
+  public int getSource() {
+    return source;
+  }
+
+  public byte[] getName() {
+    return name;
+  }
+
+  @Override
+  public boolean equals(Object object) {
+    if (object == this) {
+      return true;
+    }
+
+    if (!(object instanceof ObjectId)) {
+      return false;
+    }
+
+    final ObjectId other = (ObjectId) object;
+    if ((source != other.source) || !Arrays.equals(name, other.name)) {
+      return false;
+    }
+    return true;
+  }
+
+  @Override
+  public int hashCode() {
+    return source ^ Arrays.hashCode(name);
+  }
+
+  @Override
+  public String toString() {
+    return "Oid: <" + source + ", " + BytesFormatter.toString(name) + ">";
+  }
+}