fixup! [M44_2403] Chromium upversion to m44_2403 branch

fixup! [M44_2403] Chromium upversion to m44_2403 branch

This patch fixes a crash when processing touch events. This happens when
running ubrowser with --mobile on the desktop, and clicking on a
document that doesn't have touch event handlers.

For example, on google.com with ubrowser --mobile, clicking somewhere,
and then moving the mouse (without first releasing it) results in a
crash.

Since m44, we don't use ShouldForwardTouchEvent, and and we always
forward the touch events to the renderer. But this means that we
shouldn't call AckSyncTouchEvent. Instead, ProcessAckedTouchEvent will
be called.

Reviewed by: Antonio Gomes, SeungSeop Park

Change-Id: I278fd83f59b74a764a3fa8ad683dfec55e4951d0
Signed-off-by: Arnaud Renevier <a.renevier@samsung.com>