Remove get/set currentPath in canvas

Remove get/set currentPath in canvas

currentPath is not the right way to apply a Path2D object to a context.
Main argument is that currentPath creates a copy of the Path2D object.
Instead we pass Path2D as argument to fill, stroke and clip now.
(The way isn't defined in the w3c specification as well)

Intent to Deprecate and Remove:
https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/6l01Mv3VND0

BUG=362962
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=173073

[Justin Novosad, 2014-04-16 20:38:30]

lgtm

[zino, 2014-04-30 11:23:19]

Ping @eseidel.

This CL needs API owner's approval.
I already sent the intent to deprecate and remove. (LGTM >= 3)
Please take a look.

Thank you :)

[eseidel, 2014-04-30 23:01:39]

lgtm

[commit-bot: I haz the power, 2014-04-30 23:02:09]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jinho.bang@samsung.com/226953004/20001

[commit-bot: I haz the power, 2014-04-30 23:32:09]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-04-30 23:32:10]

Try jobs failed on following builders:
  linux_blink_rel on tryserver.blink

[zino, 2014-05-01 08:17:59]

The CQ bit was checked by jinho.bang@samsung.com

[commit-bot: I haz the power, 2014-05-01 08:18:07]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jinho.bang@samsung.com/226953004/40001

[commit-bot: I haz the power, 2014-05-01 09:25:46]

Change committed as 173073