At present TouchSelectionEditing is not available for PDFs.
Implementing this will require:
- plumb selection actions in/out of PDFium via its PPAPI interface
- add a TouchSelectionControllerClient and TouchSelectionMenuClient for PDFs in the chrome/ layer
- register this client with content/ via RenderWidgetHostView
Comment 1 by bugdroid1@chromium.org
, Jun 29 2017