Remove legacy StartsWithASCII function.

remoting/host/remoting_me2me_host.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.
 //
 // This file implements a standalone host process for Me2Me.
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 1116 matching lines @@
     // See comment in ApplyHostDomainPolicy.
     if (host_owner_ != host_owner_email_) {
       LOG(ERROR) << "The username and host domain policies cannot be enabled "
                  << "for accounts with a non-Google email.";
       ShutdownHost(kUsernameMismatchExitCode);
     }
 
     std::string username = GetUsername();
     bool shutdown =
         username.empty() ||
-        !base::StartsWithASCII(host_owner_, username + std::string("@"), false);
+        !base::StartsWith(host_owner_, username + std::string("@"),
+                          base::CompareCase::INSENSITIVE_ASCII);
 
 #if defined(OS_MACOSX)
     // On Mac, we run as root at the login screen, so the username won't match.
     // However, there's no need to enforce the policy at the login screen, as
     // the client will have to reconnect if a login occurs.
     if (shutdown && getuid() == 0) {
       shutdown = false;
     }
 #endif
 
@@ skipping 503 matching lines @@
       base::TimeDelta::FromSeconds(kShutdownTimeoutSeconds));
   new HostProcess(context.Pass(), &exit_code, &shutdown_watchdog);
 
   // Run the main (also UI) message loop until the host no longer needs it.
   message_loop.Run();
 
   return exit_code;
 }
 
 }  // namespace remoting