Remove AcceleratedCompositingForFilters setting, it's always off

R=abarth, senorblanco
BUG=401144

Review URL: https://codereview.chromium.org/448753005

git-svn-id: svn://svn.chromium.org/blink/trunk@179660 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Rename supportsLayoutStateCachedOffsets to supportsPaintInvalidationStateCachedOffsets

We no longer have a concept of cached offsets in LayoutState.
Rename the method to reflect this

R=jchaffraix@chromium.org

Review URL: https://codereview.chromium.org/429863008

git-svn-id: svn://svn.chromium.org/blink/trunk@179661 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Mark global-constructors-listing tests as passing after V8 rolls

Map, Set, and Symbol are new on the global object.

Also added ScreenOrientation, which was added (and LGTM'd by abarth)
in https://src.chromium.org/viewvc/blink?view=rev&revision=179597

BUG=400507
TBR=arv@chromium.org

Review URL: https://codereview.chromium.org/447963002

git-svn-id: svn://svn.chromium.org/blink/trunk@179662 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Remove cannotBlitToWindow

The concept of blitting to the window doesn't make sense now that the world is
composited.

R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/441113005

git-svn-id: svn://svn.chromium.org/blink/trunk@179663 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Fix three nits related to layer positions

This CL makes this minor changes to cleanup and improve the documentation of
this code. This CL shouldn't have any effect on behavior.

R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/449663002

git-svn-id: svn://svn.chromium.org/blink/trunk@179665 bbb929c8-8fbe-4397-9dbb-9b2b20218538