Return an absolute URL for HTMLImageElement.currentSrc

Due to a spec change, currentSrc should return an absolute URL.

BUG=375148

Review URL: https://codereview.chromium.org/290803002

git-svn-id: svn://svn.chromium.org/blink/trunk@174366 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Replace CursorList with RefVector<CursorData>.

We recently added a template in wtf/ for any case where we want to
store a Vector in a RefPtr. The list of CursorData objects should be
implemented by re-using that template, rather than with its own special
class which does exactly the same thing.

I added RefVector::at, because it's used by existing CursorList-code.
(See CSSComputedStyleDeclaration:1875).

Review URL: https://codereview.chromium.org/291863003

git-svn-id: svn://svn.chromium.org/blink/trunk@174367 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Push API: call through to client from PushManager for registration.

BUG=350377

Review URL: https://codereview.chromium.org/274563014

git-svn-id: svn://svn.chromium.org/blink/trunk@174368 bbb929c8-8fbe-4397-9dbb-9b2b20218538