Display text prompting user to set screen lock in order to view password in PasswordEntryEditor

chrome/android/java/strings/android_chrome_strings.grd

Index: chrome/android/java/strings/android_chrome_strings.grd
diff --git a/chrome/android/java/strings/android_chrome_strings.grd b/chrome/android/java/strings/android_chrome_strings.grd
index f085cb9357bd2dedcc21c79d3b8ce73295d4883e..9202ac085c04220ef0fc31067d6e0a9c259e50e7 100644
--- a/chrome/android/java/strings/android_chrome_strings.grd
+++ b/chrome/android/java/strings/android_chrome_strings.grd
@@ -378,6 +378,9 @@ CHAR-LIMIT guidelines:
       <message name="IDS_PASSWORDS_ACTIVATE_DEVICE_LOCK" desc="Text displayed when user doesn't have device lock set">
         Secure lock screen hasn't been set up. In order to access passwords, set up a lock screen via your device's security settings.
       </message>
+      <message name="IDS_PASSWORD_ENTRY_EDITOR_SET_DEVICE_LOCK_PROMPT" desc="Text displayed when user doesn't have device lock set">

[Theresa, 2016/08/12 18:34:28]

It's a little confusing that the description here is the same for the string
above. I think the string above is a little bit more explanatory, so maybe we
should ask UX if it's okay to resuse it? Otherwise, enhance the description so
it's clear how these two differ.

[dozsa, 2016/08/18 12:40:37]

Ah, sorry, the IDS_PASSWORDS_ACTIVATE_DEVICE_LOCK was also added by me in a CL
that this CL depends on, I've just removed it as after discussions with the UX
designer we've decided to use the latter string.

+        Set screen lock to view your passwords on this device.
+      </message>
       <message name="IDS_PASSWORD_ENTRY_EDITOR_CLIPBOARD_USERNAME" desc='Name used to identify copying username to clipboard'>
         username
       </message>