Gender-neutralize a few more comments / strings.

components/omnibox/browser/omnibox_edit_model.h

 // Copyright 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.
 
 #ifndef COMPONENTS_OMNIBOX_BROWSER_OMNIBOX_EDIT_MODEL_H_
 #define COMPONENTS_OMNIBOX_BROWSER_OMNIBOX_EDIT_MODEL_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 354 matching lines @@
   enum ControlKeyState {
     UP,                   // The control key is not depressed.
     DOWN_WITHOUT_CHANGE,  // The control key is depressed, and the edit's
                           // contents/selection have not changed since it was
                           // depressed.  This is the only state in which we
                           // do the "ctrl-enter" behavior when the user hits
                           // enter.
     DOWN_WITH_CHANGE,     // The control key is depressed, and the edit's
                           // contents/selection have changed since it was
                           // depressed.  If the user now hits enter, we assume
-                          // he simply hasn't released the key, rather than that
-                          // he intended to hit "ctrl-enter".
+                          // they simply haven't released the key, rather than
+                          // that they intended to hit "ctrl-enter".
   };
 
   // Returns true if a query to an autocomplete provider is currently
   // in progress.  This logic should in the future live in
   // AutocompleteController but resides here for now.  This method is used by
   // AutomationProvider::AutocompleteEditIsQueryInProgress.
   bool query_in_progress() const { return !autocomplete_controller()->done(); }
 
   // Returns true if the popup exists and is open.  (This is a convenience
   // wrapper for the benefit of test code, which may not have a popup model.)
@@ skipping 185 matching lines @@
 
   // The input that was sent to the AutocompleteController. Since no
   // autocomplete query is started after a tab switch, it is possible for this
   // |input_| to differ from the one currently stored in AutocompleteController.
   AutocompleteInput input_;
 
   DISALLOW_COPY_AND_ASSIGN(OmniboxEditModel);
 };
 
 #endif  // COMPONENTS_OMNIBOX_BROWSER_OMNIBOX_EDIT_MODEL_H_