commit 22707c4f0558a333b63f6b99c7f06d5bd27a4f4e
author juncai <juncai@chromium.org> Wed Dec 23 00:20:11 2015
committer Commit bot <commit-bot@chromium.org> Wed Dec 23 00:21:15 2015
tree 5e03518c1919fd730eb9839cb1e09a5b0f30f68e
parent eaa6adc9f2b8463b7f5859e3b9faffecdd5225f1

Remove Close button for chooser bubble and call CloseBubble when Cancel
button is pressed.

The Close button (the upper-right X) is redundant since the Cancel
button exists for the chooser bubble. The Close button is already
removed at chooser_bubble_ui_cocoa.mm, so also do it here for non-Mac
implementation. Also added code to call CloseBubble when Cancel button
is pressed.

BUG=492204

Review URL: https://codereview.chromium.org/1530493002

Cr-Commit-Position: refs/heads/master@{#366699}