Add the "file_handlers" manifest key for platform apps to replace "intents".

chrome/test/data/extensions/platform_apps/launch_wrong_intent/test.js

Index: chrome/test/data/extensions/platform_apps/launch_wrong_intent/test.js
diff --git a/chrome/test/data/extensions/platform_apps/launch_wrong_intent/test.js b/chrome/test/data/extensions/platform_apps/launch_wrong_intent/test.js
deleted file mode 100644
index a81197f0d9bfd1a7cb56938203a8b8272d46d34a..0000000000000000000000000000000000000000
--- a/chrome/test/data/extensions/platform_apps/launch_wrong_intent/test.js
+++ /dev/null
@@ -1,13 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-chrome.app.runtime.onLaunched.addListener(function (launchData) {
-  // Check that there is no launch data.
-  chrome.test.runTests([
-    function testIntent() {
-      chrome.test.assertTrue(!launchData, "LaunchData found");
-      chrome.test.succeed();
-    }
-  ]);
-});