Add test demonstrating issue with function calls.

If a function is called multiple times on one line, stepping over that
line does not show all of the function-call results. It only shows the
last result.

e.g. in this example, I have just stepped over the first line which
calls "get" three times. We should see three results, but we only see
one: http://screen/3WfJoZWm77cSexM

In this test you can see that all three calls to `get` are assigned to
the same slot, $15.

Change-Id: Id0c486ef349a1e527001efbcee2ed2b836f56e83
Bug: skia:13011
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/514577
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
4 files changed