Prepare CallStackSidebarPane.js for asynchronous live locations
Prepare CallStackSidebarPane.js for asynchronous live locations

R=17a2cbc4e33156874a9862b0f530521117e66a3d@chromium.org

Bug: chromium:1032016
Change-Id: I935c63da80286da9810470f46802dc1d34e08fce
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2071887
Commit-Queue: Simon Zünd <38944668e9e2ca98ccd0275b53370f90fa55c113@chromium.org>
Reviewed-by: Mathias Bynens <17a2cbc4e33156874a9862b0f530521117e66a3d@chromium.org>

ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend