Simplify ExecuteJavaScript* functions.

chrome/browser/extensions/extension_dom_clipboard_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 "base/stringprintf.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/web_contents.h"
@@ skipping 49 matching lines @@
 }
 
 bool ClipboardApiTest::ExecutePasteInSelectedTab(bool* result) {
   const char kScript[] =
       "window.domAutomationController.send(document.execCommand('paste'))";
   return ExecuteScriptInSelectedTab(kScript, result);
 }
 
 bool ClipboardApiTest::ExecuteScriptInSelectedTab(const std::string& script,
                                                   bool* result) {
-  if (!content::ExecuteJavaScriptAndExtractBool(
-          chrome::GetActiveWebContents(browser())->GetRenderViewHost(),
-          "",
+  if (!content::ExecuteScriptAndExtractBool(
+          chrome::GetActiveWebContents(browser()),
           script,
           result)) {
     message_ = "Failed to execute script in selected tab.";
     return false;
   }
   return true;
 }
 
 }  // namespace
 
@@ skipping 22 matching lines @@
   ASSERT_TRUE(LoadHostedApp("hosted_app_no_permission", "main.html"))
       << message_;
 
   bool result = false;
   ASSERT_TRUE(ExecuteCopyInSelectedTab(&result)) << message_;
   EXPECT_FALSE(result);
   ASSERT_TRUE(ExecutePasteInSelectedTab(&result)) << message_;
   EXPECT_FALSE(result);
 }