Add a flag for the password manager force-saving experiment.

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index 8922cecb0fc93ddbf834bc58420b6ca4e375bd94..4cbf05ace358cac0e546cf622745c517436ea2d5 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -6335,6 +6335,12 @@ Keep your key file in a safe place. You will need it to create new versions of y
       <message name="IDS_FLAGS_PASSWORD_MANAGER_REAUTHENTICATION_DESCRIPTION" desc="Description of the flag for the password manager reauthentication option.">
         Disable prompting the user for their OS password before revealing passwords on the passwords page.
       </message>
+      <message name="IDS_FLAGS_ENABLE_PASSWORD_FORCE_SAVING_NAME" desc="Name of the flag for the password manager's force-saving option.">
+        Enable force-saving of passwords
+      </message>
+      <message name="IDS_FLAGS_ENABLE_PASSWORD_FORCE_SAVING_DESCRIPTION" desc="Description of the flag for the password manager's force-saving option.">
+        Allow the user to manually enforce password saving instead of relying on password manager's heuristics.
+      </message>      
       <message name="IDS_FLAGS_PASSWORD_MANAGER_LINK_NAME" desc="Name of the flag to enable showing a link to account central on password settings page">
         Enable remote password management link
       </message>