Add pixel test for <select> -webkit-autofil style

R=tkent@chromium.org
BUG=58719

Review URL: https://codereview.chromium.org/216923003

git-svn-id: svn://svn.chromium.org/blink/trunk@170623 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Auto-rebaseline for r170591

http://src.chromium.org/viewvc/blink?view=revision&revision=170591

TBR=jchaffraix@chromium.org

Review URL: https://codereview.chromium.org/220113011

git-svn-id: svn://svn.chromium.org/blink/trunk@170624 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Clip Scrollbar painting like contents painting in ScrollView

Previously, it was possible to paint a scroll corner that was larger
than the iframe it was attached to, effectively enabling it to paint
over parts of the parent frame. This change clips scrollbar painting
the same way we clip contents.

BUG=331168

Review URL: https://codereview.chromium.org/220243010

git-svn-id: svn://svn.chromium.org/blink/trunk@170625 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Add DisableCompositingQueryAsserts to FrameView::useSlowRepaints

Android build hits this assertion all the time, rendering debug build useless.

This disabler isn't entirely correct, but assuming blitting-based scrolling
won't last long, it should be okay with a FIXME.

BUG=357345

Review URL: https://codereview.chromium.org/212223007

git-svn-id: svn://svn.chromium.org/blink/trunk@170626 bbb929c8-8fbe-4397-9dbb-9b2b20218538