Made the revoke buttons in the App Info dialog tab-navigable

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 e1c960a15cc4089d0bb6ef791ba56005fffc6e40..630d820980b65c338945ed7a612365e78387dbc1 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -2241,6 +2241,9 @@ Even if you have downloaded files from this website before, the website might ha
       <message name="IDS_APPLICATION_INFO_SIZE_SMALL_LABEL" desc="Text displayed instead of the app or extension's size for apps and extensions that are less than 1 megabyte in size.">
         &lt; 1 MB
       </message>
+      <message name="IDS_APPLICATION_INFO_REVOKE_PERMISSION_ALT_TEXT" desc="Alt text displayed on hover (or in a screen reader) on the icon button that revokes (removes) the corresponding permission from this app.">
+        Revoke this permission

[benwells, 2014/10/30 21:49:06]

Will this help someone using a screen reader? Should it be Revoke %1 and we fill
in the permission?

[sashab, 2014/10/31 02:10:25]

It's a good point. Originally I got ack on just this message, but confirmed with
dmazzoni and apparently ChromeVox doesn't support reading static text in native
dialogs yet, so all alt-text should contain any actual static text they need.
Updated it to 'Revoke the permission <blah>'.

+      </message>
       <message name="IDS_APPLICATION_INFO_APP_NO_PERMISSIONS_TEXT" desc="Text displayed in the Permissions area of the dialog if the app has no permissions.">
         This app requires no special permissions.
       </message>