Make some code gender neutral.

chrome/app/settings_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Settings-specific strings (included from generated_resources.grd). -->
 <grit-part>
   <!-- About Page -->
   <if expr="chromeos">
     <message name="IDS_SETTINGS_ABOUT_PAGE_DETAILED_BUILD_INFO" desc="Label describing the section that shows detailed information about the current Chrome build.">
       Detailed build information
     </message>
     <message name="IDS_SETTINGS_ABOUT_PAGE_ARC_VERSION" desc="Label for ARC version">
       ARC Version
@@ skipping 1934 matching lines @@
     </message>
     <message name="IDS_SETTINGS_PEOPLE_PASSWORD_PROMPT_ENTER_PASSWORD" desc="Text above a password input field that tells the user they need to submit their password to configure these settings.">
       Enter your password to configure screen lock.
     </message>
     <message name="IDS_SETTINGS_PEOPLE_PASSWORD_PROMPT_PASSWORD_LABEL" desc="An input box label that tells the user to enter their password in that input box.">
       Password
     </message>
     <message name="IDS_SETTINGS_PEOPLE_PASSWORD_PROMPT_INVALID_PASSWORD" desc="Text on a password field that tells the user the password is incorrect.">
       Invalid password
     </message>
-    <message name="IDS_SETTINGS_CHANGE_PICTURE_DIALOG_TITLE" desc="Title of the subpage shown when user wants to change his/her picture.">
+    <message name="IDS_SETTINGS_CHANGE_PICTURE_DIALOG_TITLE" desc="Title of the subpage shown when user wants to change their picture.">
       Change picture
     </message>
     <message name="IDS_SETTINGS_CHANGE_PICTURE_DIALOG_TEXT" desc="Text with description of what to do on Change picture subpage.">
       Choose a picture to display for your account on the sign-in screen.
     </message>
     <message name="IDS_SETTINGS_CHANGE_PICTURE_CHOOSE_FILE" desc="Text on a button that shows file dialog to choose a picture from file.">
       Choose a file
     </message>
     <message name="IDS_SETTINGS_CHANGE_PICTURE_TAKE_PHOTO" desc="The text on the button to take photo of the current user.">
       Take photo
@@ skipping 501 matching lines @@
       System
     </message>
     <message name="IDS_SETTINGS_SYSTEM_HARDWARE_ACCELERATION_LABEL" desc="Label for the checkbox that forces Chrome to render via hardware acceleration (GPU) when available.">
       Use hardware acceleration when available
     </message>
     <message name="IDS_SETTINGS_SYSTEM_PROXY_SETTINGS_BUTTON" desc="Text for the button that changes a user's network proxy settings.">
       Change proxy settings
     </message>
   </if>
 </grit-part>