Move parseFontFaceDescriptor to CSSPropertyParser.cpp

Move parseFontFaceDescriptor and related functions to
CSSPropertyParser.cpp. This also adds helper functions to
consume FunctionToken and URLs.

BUG=499780

Review URL: https://codereview.chromium.org/1331233003

git-svn-id: svn://svn.chromium.org/blink/trunk@202630 bbb929c8-8fbe-4397-9dbb-9b2b20218538
4 files changed