Remove legacy StartsWithASCII function.

extensions/browser/api/web_request/web_request_api.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 "extensions/browser/api/web_request/web_request_api.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 119 matching lines @@
   NOTREACHED();
   return "Not reached";
 }
 
 int GetFrameId(bool is_main_frame, int frame_id) {
   return is_main_frame ? 0 : frame_id;
 }
 
 bool IsWebRequestEvent(const std::string& event_name) {
   std::string web_request_event_name(event_name);
-  if (base::StartsWithASCII(web_request_event_name,
-                            webview::kWebViewEventPrefix, true)) {
+  if (base::StartsWith(web_request_event_name,
+                       webview::kWebViewEventPrefix,
+                       base::CompareCase::SENSITIVE)) {
     web_request_event_name.replace(
         0, strlen(webview::kWebViewEventPrefix), kWebRequestEventPrefix);
   }
   return std::find(
       kWebRequestEvents,
       kWebRequestEvents + kWebRequestEventsLength,
       web_request_event_name) != (kWebRequestEvents + kWebRequestEventsLength);
 }
 
 // Returns whether |request| has been triggered by an extension in
@@ skipping 2305 matching lines @@
       base::Bind(&WarningService::NotifyWarningsOnUI, profile_id(), warnings));
 
   // Continue gracefully.
   RunSync();
 }
 
 bool WebRequestHandlerBehaviorChangedFunction::RunSync() {
   helpers::ClearCacheOnNavigation();
   return true;
 }