GitLab

Desired behavior when long press happens on an empty text field is to
activate touch selection and show the quick menu if there is anything
available to show in the quick menu. Otherwise, the regular context menu
should be shown. This was regressed due to changes in context menu
source type that added LONG_PRESS and LONG_TAP types. In addition to
fixing this regression, this CL fixes the regression on the new tab page
that shows an incorrectly placed quick menu instead of the context menu.

BUG=594101

Review-Url: https://codereview.chromium.org/2124913002
Cr-Commit-Position: refs/heads/master@{#407059}