Clarify use of device_scale_factor_for_testing_.

Instead of applying it after using the device scale factor, move the
application to the top of OnSynchronizeVisualProperties() so that it
is used unconditionally and throughout the entire method.

R=dcheng@chromium.org

Change-Id: Icf3fc4b5af3141671f49bf35916469e98cec06c8
Bug: 912193
Reviewed-on: https://chromium-review.googlesource.com/c/1436490
Commit-Queue: Daniel Cheng <dcheng@chromium.org>
Auto-Submit: danakj <danakj@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#626488}
1 file changed