Have V8HiddenPropertyName static functions take an isolate in argument

Have V8HiddenPropertyName static functions take an isolate in argument to
avoid an implicit call to v8::Isolate::GetCurrent().

R=haraken
BUG=263412

Review URL: https://chromiumcodereview.appspot.com/23637014

git-svn-id: svn://svn.chromium.org/blink/trunk@158122 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Added templates to HTMLParserIdioms's isHTMLSpace and isNotHTMLSpace functions.

That is required as part of the review of CL https://codereview.chromium.org/23861003/
I also modified all the callers to those functions, to explicitly state the Character type.

BUG=284722

Review URL: https://chromiumcodereview.appspot.com/23792009

git-svn-id: svn://svn.chromium.org/blink/trunk@158123 bbb929c8-8fbe-4397-9dbb-9b2b20218538
[CSS Compositing] Parse the |isolation| property.
Included in the blending and compositing spec:
http://dev.w3.org/fxtf/compositing-1/#isolation


BUG=294125

Review URL: https://chromiumcodereview.appspot.com/24123007

git-svn-id: svn://svn.chromium.org/blink/trunk@158124 bbb929c8-8fbe-4397-9dbb-9b2b20218538