Convert the indexed db pyauto tests to content_browsertests.

chrome/test/data/indexeddb/version_change_blocked.js

-// 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.
-
-function test()
-{
-  if (document.location.hash === '#tab1') {
-    prepareDatabase(0, function () { doSetVersion(1); });
-  } else if (document.location.hash === '#tab2') {
-    doSetVersion(2);
-  } else {
-    result('fail - unexpected hash');
-  }
-}
-
-function prepareDatabase(version, callback)
-{
-  // Prepare the database, then exit normally
-  var delreq = window.indexedDB.deleteDatabase('version-change-blocked');
-  delreq.onerror = unexpectedErrorCallback;
-  delreq.onsuccess = function() {
-    var openreq = window.indexedDB.open('version-change-blocked');
-    openreq.onerror = unexpectedErrorCallback;
-    openreq.onsuccess = function(e) {
-      var db = openreq.result;
-      var setverreq = db.setVersion(String(version));
-      setverreq.onerror = unexpectedErrorCallback;
-      setverreq.onsuccess = function(e) {
-        var transaction = setverreq.result;
-        transaction.onabort = unexpectedAbortCallback;
-        transaction.oncomplete = function (e) {
-          db.close();
-          callback();
-        };
-      };
-    };
-  };
-}
-
-function doSetVersion(version)
-{
-  // Open the database and try a setVersion
-  var openreq = window.indexedDB.open('version-change-blocked');
-  openreq.onerror = unexpectedErrorCallback;
-  openreq.onsuccess = function(e) {
-    window.db = openreq.result;
-    var setverreq = window.db.setVersion(String(version));
-    setverreq.onerror = unexpectedErrorCallback;
-    setverreq.onblocked = function(e) {
-      result('setVersion(' + version + ') blocked');
-    };
-    setverreq.onsuccess = function(e) {
-      result('setVersion(' + version + ') complete');
-    };
-  };
-}