Implement chromium.self in content scripts, fix bugs

chrome/test/data/extensions/content_script_inject/script2.js

Index: chrome/test/data/extensions/content_script_inject/script2.js
diff --git a/chrome/test/data/extensions/content_script_inject/script2.js b/chrome/test/data/extensions/content_script_inject/script2.js
new file mode 100755
index 0000000000000000000000000000000000000000..9133afa269d90ba16a4694106df5b8739b9d0424
--- /dev/null
+++ b/chrome/test/data/extensions/content_script_inject/script2.js
@@ -0,0 +1,12 @@
+// 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.
+
+// Tests that we cannot see global variables defined in other content scripts.
+// This var was defined in script1a.js. We run each content script in a separate
+// context, so we shouldn't see globals across them.
+function testCannotSeeOtherContentScriptGlobals() {
+  assert(typeof script1_var == "undefined");
+}
+
+runAllTests();