Enable extension APIs for content scripts.

chrome/browser/extensions/content_script_apitest.cc

 // 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.
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/extensions/extension.h"
@@ skipping 93 matching lines @@
       L"document.defaultView.getComputedStyle(document.body, null)."
       L"getPropertyValue('background-color') == 'rgb(255, 0, 0)')",
       &styles_injected));
   ASSERT_TRUE(styles_injected);
 }
 
 IN_PROC_BROWSER_TEST_F(ExtensionApiTest, ContentScriptCSSLocalization) {
   ASSERT_TRUE(StartTestServer());
   ASSERT_TRUE(RunExtensionTest("content_scripts/css_l10n")) << message_;
 }
+
+IN_PROC_BROWSER_TEST_F(ExtensionApiTest, ContentScriptExtensionAPIs) {
+  ASSERT_TRUE(StartTestServer());
+  LoadExtension(test_data_dir_.AppendASCII("content_scripts/extension_api"));
+  ResultCatcher catcher;
+  ui_test_utils::NavigateToURL(
+      browser(), test_server()->GetURL("functions.html"));
+  EXPECT_TRUE(catcher.GetNextResult());
+}