Fix more ToolbarPhone texture capture issues

 - postInvalidate after exiting tab switcher. This ensures a new texture
   is captured immediately.
 - don't allow a texture to be captured while the NTP is scrolled.

BUG=922909,916561

Change-Id: I08de5bd7f6d948c1574ec17e7967fef2dcf5ed06
Reviewed-on: https://chromium-review.googlesource.com/c/1432372
Reviewed-by: Ted Choc <tedchoc@chromium.org>
Commit-Queue: Theresa <twellington@chromium.org>
Cr-Commit-Position: refs/heads/master@{#625414}
1 file changed