Small fixes for the lock screen md-settings page.

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 1397 matching lines @@
   </message>
 
   <if expr="chromeos">
     <message name="IDS_SETTINGS_PEOPLE_CONFIGURE_PIN_CHOOSE_PIN_TITLE" desc="Message shown below the title that tells the user to enter the initial PIN.">
       Enter your PIN
     </message>
     <message name="IDS_SETTINGS_PEOPLE_CONFIGURE_PIN_CONFIRM_PIN_TITLE" desc="Message shown below the title that tells the user to confirm their initial PIN entry.">
       Confirm your PIN
     </message>
     <message name="IDS_SETTINGS_PEOPLE_CONFIGURE_PIN_WEAK_PIN" desc="Message shown below the title that warns the user they have entered a PIN that is easy to guess.">
-      This PIN is easy to guess:
+      PIN may be easy to guess
     </message>
     <message name="IDS_SETTINGS_PEOPLE_CONFIGURE_PIN_TOO_SHORT" desc="Message shown below the title that tells the user that the PIN they entered needs to be at least four digits long.">
-      PIN must be at least 4 digits:
+      PIN must be at least 4 digits
     </message>
     <message name="IDS_SETTINGS_PEOPLE_CONFIGURE_PIN_MISMATCHED" desc="Message shown below the title that tells the user they have entered two different PIN values.">
-      PIN's don't match:
+      PINs do not match
     </message>
     <message name="IDS_SETTINGS_PEOPLE_CONFIGURE_PIN_CONTINUE_BUTTON" desc="A button that accepts the users initial PIN. The user will have to enter the PIN again after hitting this button to confirm that they entered it correctly.">
       Continue
     </message>
     <message name="IDS_SETTINGS_PEOPLE_ENABLE_SCREENLOCK" desc="The text on the checkbox to enable screenlocker for current user.">
-      Require password to wake from sleep
+      Show lock screen when waking from sleep
     </message>
     <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_TITLE" desc="Text on the people page which opens up the quick unlock subpage and the title of the quick unlock subpage.">
       Screen lock
     </message>
     <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_PASSWORD_ONLY" desc="Only the account password can be used to unlock the device.">
       Password only
     </message>
     <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_PIN_OR_PASSWORD" desc="The account password or a custom PIN can be used to unlock the device.">
       PIN or password
     </message>
     <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_NONE" desc="Text on the people page which opens up the quick unlock subpage and the title of the quick unlock subpage.">
       None
     </message>
     <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_CHANGE_PIN_BUTTON" desc="Button that the user can click to change an existing already-active PIN.">
       Change PIN
     </message>
     <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_SETUP_PIN_BUTTON" desc="Button that is used to setup a new PIN when the user does not have a PIN yet.">
-      Setup PIN
+      Set up PIN
     </message>
     <message name="IDS_SETTINGS_PEOPLE_PASSWORD_PROMPT_TITLE" desc="Title of the password prompt dialog popup.">
       Confirm your password
     </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 set up screen lock.
+      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.">
       Change picture
     </message>
@@ skipping 450 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>