Fix some grammar in chrome/browser/ui/cocoa

chrome/browser/ui/cocoa/content_settings/cookie_details.h

 // 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.
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/memory/scoped_nsobject.h"
 #include "chrome/browser/browsing_data_database_helper.h"
 #include "chrome/browser/browsing_data_indexed_db_helper.h"
 #include "chrome/browser/browsing_data_local_storage_helper.h"
@@ skipping 163 matching lines @@
     (const BrowsingDataLocalStorageHelper::LocalStorageInfo*)localStorageInfo;
 
 // Used for database details in the cookie prompt dialog.
 - (id)initWithDatabase:(const std::string&)domain
           databaseName:(const string16&)databaseName
    databaseDescription:(const string16&)databaseDescription
               fileSize:(unsigned long)fileSize;
 
 // -initWithAppCacheInfo: creates a cookie details with the manifest URL plus
 // all of this additional information that is available after an appcache is
-// actually created, including it's creation date, size and last accessed time.
+// actually created, including its creation date, size and last accessed time.
 - (id)initWithAppCacheInfo:(const appcache::AppCacheInfo*)appcacheInfo;
 
 // Used for local storage details in the cookie prompt dialog.
 - (id)initWithLocalStorage:(const std::string&)domain
                        key:(const string16&)key
                      value:(const string16&)value;
 
 // -initWithAppCacheManifestURL: is called when the cookie prompt is displayed
 // for an appcache, at that time only the manifest URL of the appcache is known.
 - (id)initWithAppCacheManifestURL:(const std::string&)manifestURL;
@@ skipping 18 matching lines @@
  @private
   scoped_nsobject<CocoaCookieDetails> details_;
 }
 
 - (CocoaCookieDetails*)details;
 
 // The adapter assumes ownership of the details object
 // in its initializer.
 - (id)initWithDetails:(CocoaCookieDetails*)details;
 @end