Make NodeList::ownerNode() virtual and rename to virtualOwnerNode()

Make NodeList::ownerNode() virtual to avoid multiple virtual calls to
is*NodeList() in Node::ownerNode() as well as casting.

NodeList::ownerNode() is also renamed to virtualOwnerNode() to avoid
conflict with LiveNodeListBase::ownerNode(). Also, we don't want
LiveNodeList::ownerNode() to be virtual as it is called from hot
code paths.

R=haraken, adamk

Review URL: https://codereview.chromium.org/161083002

git-svn-id: svn://svn.chromium.org/blink/trunk@167061 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Web Animations CSS: Set StyleChangeFromRenderer for all animation style changes

In r164013[1] the animation style change was moved from Animation to Element
but the StyleChangeFromRenderer signal was inadvertently suppressed when a
style recalc had already been requested.

[1] https://src.chromium.org/viewvc/blink?revision=164013&view=revision

BUG=332024

Review URL: https://codereview.chromium.org/130563011

git-svn-id: svn://svn.chromium.org/blink/trunk@167062 bbb929c8-8fbe-4397-9dbb-9b2b20218538
IDL compiler: sync Python to r167001

Python side to:
Remove isolated world parameters from event listener attributes
https://codereview.chromium.org/149803005/

Nice cleanup!

BUG=239771
TBR=haraken
NOTRY=true

Review URL: https://codereview.chromium.org/162583002

git-svn-id: svn://svn.chromium.org/blink/trunk@167063 bbb929c8-8fbe-4397-9dbb-9b2b20218538