Make some code gender neutral.

chrome/browser/chromeos/arc/arc_navigation_throttle.cc

 // Copyright 2016 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/chromeos/arc/arc_navigation_throttle.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/logging.h"
@@ skipping 160 matching lines @@
       // create a throttle.
       DVLOG(1)
           << "Chrome browser is selected as the preferred app for this URL: "
           << navigation_handle()->GetURL().spec();
     }
     OnIntentPickerClosed(std::move(handlers), i,
                          CloseReason::PREFERRED_ACTIVITY_FOUND);
     return;
   }
 
-  // Swap Chrome app with any app in row |kMaxAppResults-1| iff his index is
+  // Swap Chrome app with any app in row |kMaxAppResults-1| iff its index is
   // bigger, thus ensuring the user can always see Chrome without scrolling.
   size_t chrome_app_index = 0;
   for (size_t i = 0; i < handlers.size(); ++i) {
     if (ArcIntentHelperBridge::IsIntentHelperPackage(
             handlers[i]->package_name)) {
       chrome_app_index = i;
       break;
     }
   }
 
@@ skipping 101 matching lines @@
 }
 
 // static
 bool ArcNavigationThrottle::ShouldOverrideUrlLoadingForTesting(
     const GURL& previous_url,
     const GURL& current_url) {
   return ShouldOverrideUrlLoading(previous_url, current_url);
 }
 
 }  // namespace arc