Fix license headers in a number of files

tools/page_cycler/database/common.js

-// Copyright (c) 2006-2009 The Chromium Authors. All rights reserved.
+// 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.
 
 /**
  * @fileoverview A collection of common functions used by all database
  * performance tests.
  */
 
 var CANNOT_OPEN_DB = -1;
 var SETUP_FAILED = -2;
@@ skipping 88 matching lines @@
   for (var i = 0; i < TRANSACTIONS; i++) {
     transactionFunction.call(db, transactionCallback,
                              function(error) {
                                testComplete(TEST_FAILED);
                              }, function() {
                                if (++transactionsCompleted == TRANSACTIONS)
                                  testComplete(Date.now() - startTime);
                              });
   }
 }