Enable chrome://gcm-internals on Android
The page provides super valuable information to developers who are
wondering why their messages aren't arriving, which can be due to many
reasons. The page gives insight on whether Chrome received them.
This CL enables the page on Android. It doesn't display nearly as much
information as the desktop page, but will display (un)registrations
and received data messages.
It adds 7.5KB to the ChromePublic.apk size.
I've also added back some padding around the buttons since I found
an open issue about that by accident.
BUG=569127, 499179
Review URL: https://codereview.chromium.org/1515153003
Cr-Commit-Position: refs/heads/master@{#366402}
25 files changed
