Convert SecurityError exceptions to 'es.throwSecurityError()'.

Convert SecurityError exceptions to 'es.throwSecurityError()'.

This patch moves several SecurityError exceptions over to the new API,
and adds comments to the code to make it clear why URLs are exposed to
JavaScript in the cases where a URL is exposed.

BUG=275282
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=156298

[Mike West, 2013-08-19 08:15:04]

Excitement abounds! EXCEPTIONAL excitement!

-mike

https://codereview.chromium.org/23283009/diff/1/LayoutTests/http/tests/worker...
File LayoutTests/http/tests/workers/resources/worker-redirect.js (left):

https://codereview.chromium.org/23283009/diff/1/LayoutTests/http/tests/worker...
LayoutTests/http/tests/workers/resources/worker-redirect.js:28: var worker =
createWorker('http://localhost:8000/workers/resources/worker-redirect-target.js');
I changed this to make it clear that the first check throws an exception that
contains interesting data, and the second (the actual redirect) doesn't.

[jochen (gone - plz use gerrit), 2013-08-19 08:49:01]

lgtm

[commit-bot: I haz the power, 2013-08-19 08:59:11]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/mkwst@chromium.org/23283009/1

[commit-bot: I haz the power, 2013-08-19 09:48:56]

Change committed as 156298