Tracking bug for chili's TODOs

from: src/components/offline_pages/core/background/offliner.h
 70: // TODO(chili): make save operation cancellable.
Covered by crbug/705097

from: src/chrome/browser/resources/offline_pages/offline_internals.js
174:    * TODO(chili): Create a CSV writer that can abstract out the line joining.
Can delete. We don't need CSV

src/chrome/browser/android/offline_pages/background_loader_offliner.cc
 176:   // TODO(chili): We are not able to cancel a pending...
Covered by crbug/705097

src/chrome/browser/android/offline_pages/background_loader_offliner.cc
 399: // TODO(chili): Remove after RequestCoordinator can handle multiple offliners.
Covered by crbug/705102