Make Geolocation internal test methods more resilient.

Make Geolocation internal test methods more resilient.

Have the window.internals Geolocation test methods typecheck its arguments,
throwing TypeError if passed invalid Document arguments.

Additionally, have the methods gracefully handle detached documents.

R=tkent
BUG=460550
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=190642

[sof, 2015-02-23 07:43:28]

sigbjornf@opera.com changed reviewers:
+ mvanouwerkerk@google.com, tkent@chromium.org

[sof, 2015-02-23 07:43:29]

Please take a look.

Avoiding clusterfuzz disturbance, if nothing else.

[tkent, 2015-02-23 07:46:26]

I don't think we need tests for internals functions.
anyway, lgtm.

[sof, 2015-02-23 08:15:03]

The CQ bit was checked by sigbjornf@opera.com

[commit-bot: I haz the power, 2015-02-23 08:15:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/925953003/1

[commit-bot: I haz the power, 2015-02-23 08:45:28]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=190642

[Michael van Ouwerkerk, 2015-02-23 10:10:26]

mvanouwerkerk@chromium.org changed reviewers:
+ mvanouwerkerk@chromium.org

[Michael van Ouwerkerk, 2015-02-23 10:10:26]

lgtm thanks!