GitLab

This reverts commit ecdb6a3b.

Reason for revert:
This is causing a weird behavior where if you mouse-down on the button and
then hold and drag way, select-to-speak is activated anyway. Select-to-Speak
can also be activated from behind the on-screen keyboard.

TBR=jamescook@chromium.org,dtseng@chromium.org

Bug: 870922
Change-Id: Ib9b7395e3a66c491a6c3274dd93898b4e064dd4d
Reviewed-on: https://chromium-review.googlesource.com/1187728
Commit-Queue: Katie Dektar <katie@chromium.org>
Reviewed-by: Katie Dektar <katie@chromium.org>
Cr-Commit-Position: refs/heads/master@{#585684}