GitLab

    
When both native and emulated touch streams are available,
we should block one stream while another is active.
To achieve this RenderWidgetHostImpl gives TouchEmulator a chance
to handle native touch event, so it can be effectively blocked.
    
BUG=384522

Review URL: https://codereview.chromium.org/375863005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@284475 0039d316-1c4b-4281-b951-d872f2087c98