Adding run_at to chrome.tabs.executeScript/insertCss.

chrome/browser/extensions/execute_script_apitest.cc

 // 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.
 
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "net/base/mock_host_resolver.h"
 
 class ExecuteScriptApiTest : public ExtensionApiTest {
  protected:
   void SetupDelayedHostResolver() {
@@ skipping 54 matching lines @@
   ASSERT_TRUE(RunExtensionSubtest("executescript/navigation_race",
                                   "javascript_url.html")) << message_;
 }
 
 // If failing, mark disabled and update http://crbug.com/92105.
 IN_PROC_BROWSER_TEST_F(ExecuteScriptApiTest, ExecuteScriptFrameAfterLoad) {
   SetupDelayedHostResolver();
   ASSERT_TRUE(StartTestServer());
   ASSERT_TRUE(RunExtensionTest("executescript/frame_after_load")) << message_;
 }
+
+IN_PROC_BROWSER_TEST_F(ExecuteScriptApiTest, ExecuteScriptRunAt) {
+  SetupDelayedHostResolver();
+  ASSERT_TRUE(StartTestServer());
+  ASSERT_TRUE(RunExtensionTest("executescript/run_at")) << message_;
+}