Remove override of View::HitTestRect() from ImageView
The override of View::HitTestRect() in ImageView forces hit
testing to fail if the |interactive_| member is false, which
prevents the view from accepting events. Since the |interactive_|
member is unrelated to location, it is better to move this logic
into an override of EventTarget::CanAcceptEvent() instead.
BUG=374325
TEST=none
Review URL: https://codereview.chromium.org/
282403002
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@272117 0039d316-1c4b-4281-b951-d872f2087c98