Add icon to the streamlined hosted app creation dialog.

This CL adds an ImageView that displays the icon to the
BookmarkAppBubbleView. It also moves the "Open as tab" checkbox to the
same line as the buttons to save on vertical space which was consumed
by the square icon.

BUG=318607

Review URL: https://codereview.chromium.org/184213006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255810 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 255810
Correctly handle has_more in PepperInternalFileRefBackend

BUG=347900

Review URL: https://codereview.chromium.org/190423002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255811 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 255811