Add MediaSession runtime flag along with stub MediaSession object
Implementation of the MediaSession specification will happen behind
the runtime flag 'MediaSession'.
Add a virtual testsuite for running tests with MediaSession flag. This
way we don't have to have the flag enabled when running LayoutTests in
general, only when running MediaSession tests.
Intent to implement:
https://groups.google.com/a/chromium.org/d/msg/blink-dev/dLWDxYgxzQ8/vXt0ntWFNBwJ
BUG=497735
Review URL: https://codereview.chromium.org/1206283002
git-svn-id: svn://svn.chromium.org/blink/trunk@198049 bbb929c8-8fbe-4397-9dbb-9b2b20218538
12 files changed