Use base::StartWith() in more places when appropriate.

chrome/browser/shell_integration_linux.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 "chrome/browser/shell_integration_linux.h"
 
 #include <fcntl.h>
 #include <stddef.h>
 
 #include <memory>
@@ skipping 184 matching lines @@
                                               &success_code);
     }
   }
 
   if (!ran_ok || success_code != EXIT_SUCCESS) {
     // xdg-settings failed: we can't determine or set the default browser.
     return UNKNOWN_DEFAULT;
   }
 
   // Allow any reply that starts with "yes".
-  return (reply.find("yes") == 0) ? IS_DEFAULT : NOT_DEFAULT;
+  return base::StartsWith(reply, "yes", base::CompareCase::SENSITIVE)
+             ? IS_DEFAULT
+             : NOT_DEFAULT;
 #endif
 }
 
 }  // namespace
 
 bool SetAsDefaultBrowser() {
   return SetDefaultWebClient(std::string());
 }
 
 bool SetAsDefaultProtocolClient(const std::string& protocol) {
@@ skipping 832 matching lines @@
   base::FilePath applications_menu = GetDataWriteLocation(env.get());
   applications_menu = applications_menu.AppendASCII("applications");
   std::vector<base::FilePath> shortcut_filenames_app_menu =
       GetExistingProfileShortcutFilenames(profile_path, applications_menu);
   for (const auto& menu : shortcut_filenames_app_menu) {
     DeleteShortcutInApplicationsMenu(menu, base::FilePath(kDirectoryFilename));
   }
 }
 
 }  // namespace shell_integration_linux