Improve grammar in some comments.

chrome/browser/ui/views/frame/browser_frame.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/ui/views/frame/browser_frame.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/debug/leak_annotations.h"
@@ skipping 248 matching lines @@
     }
   }
 }
 
 ui::MenuModel* BrowserFrame::GetSystemMenuModel() {
 #if defined(OS_CHROMEOS)
   ash::SessionStateDelegate* delegate =
       ash::WmShell::Get()->GetSessionStateDelegate();
   if (delegate && delegate->NumberOfLoggedInUsers() > 1) {
     // In Multi user mode, the number of users as well as the order of users
-    // can change. Coming here we have more then one user and since the menu
+    // can change. Coming here we have more than one user and since the menu
     // model contains the user information, it must get updated to show any
     // changes happened since the last invocation.
     menu_model_builder_.reset();
   }
 #endif
   if (!menu_model_builder_.get()) {
     menu_model_builder_.reset(
         new SystemMenuModelBuilder(browser_view_, browser_view_->browser()));
     menu_model_builder_->Init();
   }
   return menu_model_builder_->menu_model();
 }
 
 views::View* BrowserFrame::GetNewAvatarMenuButton() {
   return browser_frame_view_->GetProfileSwitcherView();
 }