Remove unused EnableAdviewSrcAttribute command line flag.

chrome/test/data/extensions/platform_apps/ad_view/onloadcommit_ack/chrometest.js

Index: chrome/test/data/extensions/platform_apps/ad_view/onloadcommit_ack/chrometest.js
diff --git a/chrome/test/data/extensions/platform_apps/ad_view/onloadcommit_ack/chrometest.js b/chrome/test/data/extensions/platform_apps/ad_view/onloadcommit_ack/chrometest.js
deleted file mode 100644
index fd7697c0b6c7a1ae553ad48b9848f0a5e305ba30..0000000000000000000000000000000000000000
--- a/chrome/test/data/extensions/platform_apps/ad_view/onloadcommit_ack/chrometest.js
+++ /dev/null
@@ -1,39 +0,0 @@
-// Copyright 2013 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.
-
-// This test checks the page loaded inside an <adview> has the ability to
-// 1) receive "message" events from the application, and 2) use
-// "window.postMessage" to post back a message to the application.
-
-function runTests(guestURL) {
-  chrome.test.runTests([
-    function test() {
-      var adview = document.getElementsByTagName("adview")[0];
-
-      adview.addEventListener("loadcommit", function() {
-        adview.contentWindow.postMessage({
-          message: "onloadcommit",
-          data: "data"
-        }, "*");
-      });
-
-      window.addEventListener("message", function(event) {
-        if (event.data.message == "onloadcommit-ack") {
-          console.log("onloadcommit-ack message received.");
-          chrome.test.succeed();
-        }
-      });
-
-      adview.setAttribute("src", guestURL);
-    }
-  ]);
-}
-
-window.onload = function() {
-  chrome.test.getConfig(function(config) {
-    var guestURL = 'http://localhost:' + config.testServer.port +
-        '/extensions/platform_apps/ad_view/ad_network_site/testsdk.html';
-    runTests(guestURL);
-  });
-}