customtabs: Convert to the new AIDL interface.

third_party/android_customtabs/customtabs/src/android/support/customtabs/CustomTabsCallback.java

Index: third_party/android_customtabs/customtabs/src/android/support/customtabs/CustomTabsCallback.java
diff --git a/third_party/android_customtabs/customtabs/src/android/support/customtabs/CustomTabsCallback.java b/third_party/android_customtabs/customtabs/src/android/support/customtabs/CustomTabsCallback.java
new file mode 100644
index 0000000000000000000000000000000000000000..02a1d6a4694bc267b833f8f2b4812d6853a0896a
--- /dev/null
+++ b/third_party/android_customtabs/customtabs/src/android/support/customtabs/CustomTabsCallback.java
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * 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 android.support.customtabs;
+
+import android.os.Bundle;
+
+/**
+ * A callback class for custom tabs client to get messages regarding events in their custom tabs.
+ */
+public class CustomTabsCallback {
+    /**
+     * To be called when a page navigation starts.
+     *
+     * @param url URL the user has navigated to.
+     * @param extras Reserved for future use.
+     */
+    public void onUserNavigationStarted(String url, Bundle extras) {}
+
+    /**
+     * To be called when a page navigation finishes.
+     *
+     * @param url URL the user has navigated to.
+     * @param extras Reserved for future use.
+     */
+    public void onUserNavigationFinished(String url, Bundle extras) {}
+}