Implementation report: Chrome is passing all the touch-action tests

I ran all the touch-action tests on Chrome Android* Stable (38.0.2125.114)
and verified they all pass.  I collected the list manually, but I'm happy
to generate an official report (for this subset of tests) if there's any
interest.

pointerevent_touch-action-auto-css_touch-manual.html - PASS
pointerevent_touch-action-button-test_touch-manual.html - PASS
pointerevent_touch-action-illegal.html - PASS
pointerevent_touch-action-inherit_child-auto-child-none_touch-manual.html -
PASS
pointerevent_touch-action-inherit_child-none_touch-manual.html - PASS
pointerevent_touch-action-inherit_child-pan-x-child-pan-x_touch-manual.html
- PASS
pointerevent_touch-action-inherit_child-pan-x-child-pan-y_touch-manual.html
- PASS
pointerevent_touch-action-inherit_highest-parent-none_touch-manual.html -
PASS
pointerevent_touch-action-inherit_parent-none_touch-manual.html - PASS
pointerevent_touch-action-keyboard-manual.html - PASS
pointerevent_touch-action-mouse-manual.html - PASS
pointerevent_touch-action-none-css_touch-manual.html - PASS
pointerevent_touch-action-pan-x-css_touch-manual.html - PASS
pointerevent_touch-action-pan-x-pan-y-pan-y_touch-manual.html - PASS
pointerevent_touch-action-pan-x-pan-y_touch-manual.html - PASS
pointerevent_touch-action-pan-y-css_touch-manual.html - PASS
pointerevent_touch-action-span-test_touch-manual.html - PASS
pointerevent_touch-action-svg-test_touch-manual.html - PASS
pointerevent_touch-action-table-test_touch-manual.html - PASS
pointerevent_touch-action-verification.html - PASS

Note that the failures I mentioned on our last conf call were actually
operator error <https://code.google.com/p/chromium/issues/detail?id=432160>
(I misunderstood the test instructions ).

* One exception: Chrome on Android appears not to support horizontal mouse
scrolling <https://code.google.com/p/chromium/issues/detail?id=435154>
(scrollbars aren't clickable in Android).  The vertical portion of this
test worked, and I verified the full test on Chrome desktop (ChromeOS).

Rick