Remove URLs from chrome.tabs.executeScript permission warning.

chrome/test/data/extensions/api_test/executescript/basic/test.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.
 
 var pass = chrome.test.callbackPass;
 var fail = chrome.test.callbackFail;
 var assertEq = chrome.test.assertEq;
 var assertTrue = chrome.test.assertTrue;
 var relativePath =
     '/extensions/api_test/executescript/basic/test_executescript.html';
@@ skipping 74 matching lines @@
                 }));
              });
         });
       },
 
       function executeJavaScriptCodeShouldFail() {
         chrome.tabs.update(tabId, { url: testFailureUrl }, function() {
           var script_file = {};
           script_file.code = "document.title = 'executeScript';";
           chrome.tabs.executeScript(tabId, script_file, fail(
-              'Cannot access contents of url "' + testFailureUrl +
-              '". Extension manifest must request permission to access this ' +
-              'host.'));
+              'Cannot access contents of a page. ' +
+              'Extension manifest must request permission to access the ' +
+              'respective host.'));
         });
       },
 
       function executeJavaScriptWithNoneValueShouldFail() {
         var script_file = {};
         chrome.tabs.executeScript(tabId, script_file, fail(
             'No source code or file specified.'));
       },
 
       function executeJavaScriptWithTwoValuesShouldFail() {
         var script_file = {};
         script_file.file = 'script1.js';
         script_file.code = 'var test = 1;';
         chrome.tabs.executeScript(tabId, script_file, fail(
             'Code and file should not be specified ' +
             'at the same time in the second argument.'));
       }
     ]);
   });
 
   chrome.tabs.create({ url: testUrl });
 });