Update security key attestation prompt string.

Bug: 793985
Change-Id: I840f950d7de6e6ac8506ed8937bbe9a3e270d5da
Reviewed-on: https://chromium-review.googlesource.com/887820Reviewed-by: Kim Paulhamus <kpaulhamus@chromium.org>
Commit-Queue: Adam Langley <agl@chromium.org>
Cr-Commit-Position: refs/heads/master@{#532506}

chrome/app/generated_resources.grd

@@ -10947,14 +10947,14 @@ For more information, visit our <ph name="BEGIN_LINK">&lt;a target="_blank" href
     </message>
 
     <!-- Security Key permission -->
-    <message name="IDS_SECURITY_KEY_ATTESTATION_PERMISSION_FRAGMENT" desc="Permission request shown when a site requests attestation information from a Security Key. This follows a prompt: 'This site would like to:'">
-      See the serial number of your security key
+    <message name="IDS_SECURITY_KEY_ATTESTATION_PERMISSION_FRAGMENT" desc="A permission prompt shown to a user when a website wants to see information that uniquely identifies the user's Security Key, such as make and model number. The text '[website URL] wants to:' precedes this string. The word 'identifying' modifies 'information'.">
+      See identifying information about your Security Key
     </message>
     <if expr="is_android">
-      <message name="IDS_SECURITY_KEY_ATTESTATION_INFOBAR_QUESTION" desc="Wording of an info bar prompt when a site requests attestation information from a Security Key.">
+      <message name="IDS_SECURITY_KEY_ATTESTATION_INFOBAR_QUESTION" desc="An infobar prompt shown to a user when a website wants to see information that uniquely identifies the user's Security Key, such as make and model number. The word 'identifying' modifies 'information'.">
         <ph name="URL">
           $1<ex>maps.google.com</ex>
-        </ph> wants to see the serial number of your security key
+        </ph> wants to see identifying information about your Security Key
       </message>
     </if>