Bug 1025562 - Add logging to TiledContentClient. r=
Bug 1026756 - Detect when a scroll offset update is going to remove checkerboarding, and don't leave things in a low-precision state. r=
Bug 1021248 - Update the low-res tiles even when not in risk of checkerboarding. r=Cwiiis
Dump stuff on success
Isolate test case
Enable various loggings
More logging