[MD Settings] Add title to show/hide password button.

chrome/app/settings_strings.grdp

Index: chrome/app/settings_strings.grdp
diff --git a/chrome/app/settings_strings.grdp b/chrome/app/settings_strings.grdp
index e818389b530418a016b825c7d975e2034ecaedf9..46b0ab55bb5f872d9bead49e8ddbfdcd45ddeaf0 100644
--- a/chrome/app/settings_strings.grdp
+++ b/chrome/app/settings_strings.grdp
@@ -414,6 +414,12 @@
   <message name="IDS_SETTINGS_PASSWORD_SEARCH" desc="Placeholder/label for the text input field that allows a user to filter saved passwords.">
     Search passwords
   </message>
+  <message name="IDS_SETTINGS_PASSWORD_SHOW" desc="Label for a tool tip on a button that reveals the saved password.">

[dschuyler, 2017/02/15 20:12:15]

"Label for" seems redundant with "a tool tip" consider
s/Label for a/A/

Same for the message below.

[hcarmona, 2017/02/15 21:52:10]

Done.

+    Show password
+  </message>
+  <message name="IDS_SETTINGS_PASSWORD_HIDE" desc="Label for a tool tip on a button that hides the saved password that is being shown.">
+    Hide password
+  </message>
   <message name="IDS_SETTINGS_PASSWORDS_VIEW_DETAILS_TITLE" desc="Title for the dialog that shows password details. This dialog lets a user see a saved password and copy the username.">
     Saved password details
   </message>