GitLab

In NativeTextfieldViews, part of text can be selected using touch
scrubbing. After touch scrubbing is finished, touch editing handles
should appear to allow more touch selection manipulation.

BUG=239111

Review URL: https://codereview.chromium.org/93433003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238444 0039d316-1c4b-4281-b951-d872f2087c98