Remove a few more unused scripts.

BUG=none
R=jochen@chromium.org

Review URL: https://codereview.chromium.org/14882002

git-svn-id: svn://svn.chromium.org/blink/trunk@149618 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Remove ENABLE(MEDIA_STREAM) and ENABLE_WEBRTC guards because these are always true

BUG=None

Review URL: https://chromiumcodereview.appspot.com/14329006

git-svn-id: svn://svn.chromium.org/blink/trunk@149619 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Remove unused methods from RefCountedBase.

These methods were never used by the Chromium port, since they are
Mac-specific or JSC-specific.

Review URL: https://chromiumcodereview.appspot.com/14862003

git-svn-id: svn://svn.chromium.org/blink/trunk@149620 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Remove a few more unused scripts.

BUG=none
R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/14877004

git-svn-id: svn://svn.chromium.org/blink/trunk@149621 bbb929c8-8fbe-4397-9dbb-9b2b20218538