Move yet another block of tests to manifest_version 2

chrome/test/data/extensions/api_test/page_action/hash_change/background.js

+// Copyright (c) 2011 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 makes sure we only enable the page action once per tab.
+var hasEnabled = {};
+
+chrome.extension.onRequest.addListener(function(request, sender) {
+  if (request.msg == "feedIcon") {
+    console.log('url: ' + sender.tab.url);
+
+    if (!hasEnabled[sender.tab.id]) {
+      console.log('Enabling for ' + sender.tab.id);
+
+      // We have received a list of feed urls found on the page.
+      // Enable the page action icon.
+      chrome.pageAction.setTitle({ tabId: sender.tab.id,
+                                   title: "Page action..."});
+      chrome.pageAction.show(sender.tab.id);
+      hasEnabled[sender.tab.id] = true;
+      hasEnabledLastTabId = sender.tab.id;
+    } else {
+      console.log('We are not doing this more than once (for ' +
+                  sender.tab.id + ')');
+    }
+  }
+});