Add strings for use in iOS update password infobar

ios/chrome/app/strings/ios_strings.grd

Index: ios/chrome/app/strings/ios_strings.grd
diff --git a/ios/chrome/app/strings/ios_strings.grd b/ios/chrome/app/strings/ios_strings.grd
index 7b44b910e55f97935d633d6069d3b7ca74ded9e2..11495c24f5c038f395c0245b469169e8ec49a1c3 100644
--- a/ios/chrome/app/strings/ios_strings.grd
+++ b/ios/chrome/app/strings/ios_strings.grd
@@ -200,11 +200,25 @@ all other OS specific variables will be false.
       <message name="IDS_IOS_PASSWORD_MANAGER_BLACKLIST_BUTTON" desc="Button text for the 'Save Password' infobar's 'Never remember for this site' option [Length: 10em]">
         Never
       </message>
+      <message name="IDS_IOS_PASSWORD_MANAGER_UPDATE_BUTTON" desc="Label for the 'update' button in the Update Password infobar. This infobar asks if the user wishes to update the saved password for a site to a new password the user has just entered; the button applies the suggested update. [Length: 10em]">
+        Update
+      </message>
+      <message name="IDS_IOS_PASSWORD_MANAGER_CANCEL_BUTTON" desc="Label for the 'dismiss' button in the Update Password infobar. The UI asks the user if they wish to update their password; the button dismisses the UI without taking the suggested action.">
+        Nope
+      </message>
       <message name="IDS_IOS_PASSWORD_MANAGER_SAVE_PASSWORD_PROMPT_SMART_LOCK_BRANDING" desc="Info bar message to save a password, referring to the Google Smart Lock
 brand. [Length: 70em]">
         Do you want Google Smart Lock to save your password for this site?
       </message>
-
+      <message name="IDS_IOS_PASSWORD_MANAGER_UPDATE_PASSWORD" desc="Infobar message to update a password without associated credential [Length: 70em].">
+        Do you want <ph name="PASSWORD_MANAGER_BRAND">$1<ex>Google Chrome</ex></ph> to update your password for this site?
+      </message>
+      <message name="IDS_IOS_PASSWORD_MANAGER_UPDATE_PASSWORD_FOR_ACCOUNT" desc="Infobar message to update a password for named account, referring to PASSWORD_MANAGER_BRAND as the  [Length:70em]">
+        Do you want <ph name="PASSWORD_MANAGER_BRAND">$1<ex>Google Chrome</ex></ph> to update the password for <ph name="USERNAME">$2<ex>don.john.lemon@example.com</ex></ph> for this site?
+      </message>
+      <message name="IDS_IOS_PASSWORD_MANAGER_SMART_LOCK_FOR_PASSWORDS" desc="The more descriptive brand name of the password manager when the user is signed in. Used in various UI elements, can be in link format.">
+        Google Smart Lock for Passwords
+      </message>
       <!-- Password Generation -->
       <message name="IDS_IOS_GENERATED_PASSWORD_ACCEPT" desc="The text of the button that accepts the generated password. [Length: 20em] [iOS only]">
         Use Password