Move HTML element subclasses to sub-directories to clarify ownership.
e.g.
core/html/HTMLCanvasElement.* -> core/html/canvas/
core/html/HTMLInputElement.* -> core/html/forms/
core/html/HTMLVideoElement.* -> core/html/media/
core/html/HTMLTrackElement.* -> core/html/track/
This isn't possible for now because of an assumption in make_element_factory.py.
Comment 1 by bugdroid1@chromium.org
, Oct 4 2017