Translate: Don't use custom CSS and JavaScript loader on iOS

chrome/browser/translate/translate_script.cc

 // Copyright 2013 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/translate/translate_script.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 70 matching lines @@
     translate_script_url = GURL(kScriptURL);
 
   translate_script_url = net::AppendQueryParameter(
       translate_script_url,
       kCallbackQueryName,
       kCallbackQueryValue);
   translate_script_url = net::AppendQueryParameter(
       translate_script_url,
       kAlwaysUseSslQueryName,
       kAlwaysUseSslQueryValue);
+#if !defined(OS_IOS)
+  // iOS doesn't need to use specific loaders for the isolated world.
   translate_script_url = net::AppendQueryParameter(
       translate_script_url,
       kCssLoaderCallbackQueryName,
       kCssLoaderCallbackQueryValue);
   translate_script_url = net::AppendQueryParameter(
       translate_script_url,
       kJavascriptLoaderCallbackQueryName,
       kJavascriptLoaderCallbackQueryValue);
+#endif  // !defined(OS_IOS)
 
   translate_script_url =
       TranslateURLUtil::AddHostLocaleToUrl(translate_script_url);
   translate_script_url =
       TranslateURLUtil::AddApiKeyToUrl(translate_script_url);
 
   fetcher_.reset(new TranslateURLFetcher(kFetcherId));
   fetcher_->set_extra_request_header(kRequestHeader);
   fetcher_->Request(
       translate_script_url,
@@ skipping 29 matching lines @@
     // scripts.
     base::MessageLoop::current()->PostDelayedTask(
         FROM_HERE,
         base::Bind(&TranslateScript::Clear,
                    weak_method_factory_.GetWeakPtr()),
         expiration_delay_);
   }
 
   callback_.Run(success, data);
 }