TBR: Revert "Implement chromium.self in content scripts..."

chrome/test/data/extensions/content_script_inject/js_test.js

-// Copyright (c) 2009 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.
-
-// A quick and dirty JavaScript test runner.
-
-function assert(truth) {
-  if (!truth) {
-    throw new Error('Assertion failed');
-  }
-}
-
-function runAllTests() {
-  // If there was already an error, do nothing. We don't want to muddy
-  // up the results.
-  if (document.title.indexOf("Error: ") == 0) {
-    return;
-  }
-
-  for (var propName in window) {
-    if (typeof window[propName] == "function" &&
-        propName.indexOf("test") == 0) {
-      try {
-        window[propName]();
-        document.title += propName + ",";
-      } catch (e) {
-        // We use document.title to communicate results back to the browser.
-        document.title = "Error: " + propName + ': ' + e.message;
-        return;
-      }
-    }
-  }
-}