Remove legacy StartsWithASCII function.

chrome/browser/ui/webui/interstitials/interstitial_ui.cc

 // Copyright 2014 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/ui/webui/interstitials/interstitial_ui.h"
 
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 238 matching lines @@
     int render_frame_id,
     const content::URLDataSource::GotDataCallback& callback) {
   scoped_ptr<content::InterstitialPageDelegate> interstitial_delegate;
   if (base::StartsWith(path, "ssl", base::CompareCase::SENSITIVE)) {
     interstitial_delegate.reset(CreateSSLBlockingPage(web_contents_));
   } else if (base::StartsWith(path, "safebrowsing",
                               base::CompareCase::SENSITIVE)) {
     interstitial_delegate.reset(CreateSafeBrowsingBlockingPage(web_contents_));
   }
 #if defined(ENABLE_CAPTIVE_PORTAL_DETECTION)
-  else if (base::StartsWithASCII(path, "captiveportal", true))
+  else if (base::StartsWith(path, "captiveportal",
+                            base::CompareCase::SENSITIVE))
   {
     interstitial_delegate.reset(CreateCaptivePortalBlockingPage(web_contents_));
   }
 #endif
   std::string html;
   if (interstitial_delegate.get()) {
     html = interstitial_delegate.get()->GetHTMLContents();
   } else {
     html = ResourceBundle::GetSharedInstance()
                           .GetRawDataResource(IDR_SECURITY_INTERSTITIAL_UI_HTML)
                           .as_string();
   }
   scoped_refptr<base::RefCountedString> html_bytes = new base::RefCountedString;
   html_bytes->data().assign(html.begin(), html.end());
   callback.Run(html_bytes.get());
 }