The debugger can now correctly break on exceptions
and show the corresponding line in the inspector.
It correctly understands which scripts are internal
to sky and does not pause during them.
There is still a ton to make work here
(including stacktraces which I have not tested),
but basic functionality seems to work.
The current implementation is not smart enough to
unpause the inspector when the frontend disconnects.
BUG=434510,434513
R=abarth@chromium.org
Review URL: https://codereview.chromium.org/727593004
Eventually all of this should be moved out of Sky
and instead sit on top of Sky as just a mojo v8 debug service
but for now I'm just bringing back what we had in Blink
so I can make it work with our new inspector backend
and then we can move it out.
I also sorted gn lists and fixed two .idl files
which were in the wrong sources list in core.gni.
R=abarth@chromium.org, yurys@chromium.org
Review URL: https://codereview.chromium.org/723773002
