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The ink drop highlight lingers behind when the window and the
caption buttons are growing as a result of maximizing the window.
Sometimes it even sticks in the wrong place forever until the mouse
is moved.

This CL fixes the issue by painting the hover highlight in such
a way that simulates the AutoHighlightMode::SHOW_ON_RIPPLE mode.
This guarantees the highlight is always painted at the center of
button.

BUG=840901

Change-Id: I6096fef6605c262ca81c8526fea029e7dc459179
Reviewed-on: https://chromium-review.googlesource.com/1053805Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Ahmed Fakhry <afakhry@chromium.org>
Cr-Commit-Position: refs/heads/master@{#557692}