Simplify ExecuteJavaScript* functions.

content/browser/site_per_process_browsertest.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/command_line.h"
 #include "base/stringprintf.h"
 #include "base/utf_string_conversions.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_service.h"
@@ skipping 134 matching lines @@
   bool NavigateIframeToURL(Shell* window,
                            const GURL& url,
                            std::string iframe_id) {
     std::string script = base::StringPrintf(
         "var iframes = document.getElementById('%s');iframes.src='%s';",
         iframe_id.c_str(), url.spec().c_str());
     WindowedNotificationObserver load_observer(
         NOTIFICATION_LOAD_STOP,
         Source<NavigationController>(
             &shell()->web_contents()->GetController()));
-    bool result = ExecuteJavaScript(window->web_contents()->GetRenderViewHost(),
-                                    "", script);
+    bool result = ExecuteScript(window->web_contents(), script);
     load_observer.Wait();
     return result;
   }
 
   void SetUpCommandLine(CommandLine* command_line) {
     command_line->AppendSwitch(switches::kSitePerProcess);
   }
 };
 
 IN_PROC_BROWSER_TEST_F(SitePerProcessBrowserTest, CrossSiteIframe) {
@@ skipping 220 matching lines @@
         "server-redirect?" + client_redirect_http_url.spec()));
     EXPECT_TRUE(NavigateIframeToURL(shell(), server_redirect_http_url, "test"));
 
     // DidFailProvisionalLoad when navigating to client_redirect_http_url.
     EXPECT_EQ(observer.navigation_url(), client_redirect_http_url);
     EXPECT_FALSE(observer.navigation_succeeded());
   }
 }
 
 }