Better error message in app.window.current() when called from bg page.

Better error message in app.window.current() when called from bg page.

BUG=179735
TEST=Call app.window.current() in the bg page.

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=206140

[zhchbin, 2013-06-10 11:46:36]

Hi mek, better error message as crbug.com/179735 description. Please review.

[Marijn Kruisselbrink, 2013-06-11 19:48:42]

lgtm

[commit-bot: I haz the power, 2013-06-12 00:18:28]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/zhchbin@gmail.com/16622003/1

[zhchbin, 2013-06-12 01:37:37]

Please review, presubmit failed because missing LGTM from the owner.

[commit-bot: I haz the power, 2013-06-12 03:16:26]

Retried try job too often on chromium_presubmit for step(s) presubmit
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=chromium_p...

[Yoyo Zhou, 2013-06-12 18:25:53]

LGTM

[commit-bot: I haz the power, 2013-06-13 07:57:31]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/zhchbin@gmail.com/16622003/1

[commit-bot: I haz the power, 2013-06-13 08:15:33]

Sorry for I got bad news for ya.
Compile failed with a clobber build on mac_rel.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=mac_rel&nu...
Your code is likely broken or HEAD is junk. Please ensure your
code is not broken then alert the build sheriffs.
Look at the try server FAQ for more details.

[commit-bot: I haz the power, 2013-06-13 15:28:25]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/zhchbin@gmail.com/16622003/1

[commit-bot: I haz the power, 2013-06-13 19:47:26]

Change committed as 206140