Remove legacy StartsWithASCII function.

extensions/browser/api/cast_channel/logger.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 "extensions/browser/api/cast_channel/logger.h"
 
 #include <string>
 
 #include "base/strings/string_util.h"
 #include "base/time/tick_clock.h"
@@ skipping 233 matching lines @@
   LogSocketEvent(channel_id, event);
 }
 
 void Logger::LogSocketEventForMessage(int channel_id,
                                       EventType event_type,
                                       const std::string& message_namespace,
                                       const std::string& details) {
   DCHECK(thread_checker_.CalledOnValidThread());
 
   SocketEvent event = CreateEvent(event_type);
-  if (base::StartsWithASCII(message_namespace, kInternalNamespacePrefix, false))
+  if (base::StartsWith(message_namespace, kInternalNamespacePrefix,
+                       base::CompareCase::INSENSITIVE_ASCII))
     event.set_message_namespace(message_namespace);
   event.set_details(details);
 
   LogSocketEvent(channel_id, event);
 }
 
 void Logger::LogSocketChallengeReplyEvent(int channel_id,
                                           const AuthResult& auth_result) {
   DCHECK(thread_checker_.CalledOnValidThread());
 
@@ skipping 98 matching lines @@
   if (it != aggregated_socket_events_.end()) {
     return it->second->last_errors;
   } else {
     return LastErrors();
   }
 }
 
 }  // namespace cast_channel
 }  // namespace core_api
 }  // namespace extensions