Make ProxyResolver not use to-be-deprecated V8 functions.

Make ProxyResolver not use to-be-deprecated V8 functions.

This gets rid of more places where Persistent handles are copied
(see bug).

BUG=236290
TBR=eroman@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=202418

[marja, 2013-05-24 15:09:40]

dcarney, could you review this? (I'll ask an OWNER to rubberstamp if this lgty.)

[dcarney, 2013-05-27 07:56:43]

lgtm, after discussed contextscope fix

[commit-bot: I haz the power, 2013-05-27 09:07:27]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/marja@chromium.org/15796006/3001

[marja, 2013-05-27 09:23:31]

TBRing eroman@ again since this is adapting proxy_resolver to v8 api changes
again.

[commit-bot: I haz the power, 2013-05-27 09:23:44]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/marja@chromium.org/15796006/7001

[commit-bot: I haz the power, 2013-05-27 09:56:22]

Sorry for I got bad news for ya.
Compile failed with a clobber build on android_clang_dbg.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=android_cl...
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, 2013-05-27 10:22:15]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/marja@chromium.org/15796006/7001

[commit-bot: I haz the power, 2013-05-27 12:17:20]

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

[commit-bot: I haz the power, 2013-05-27 12:18:15]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/marja@chromium.org/15796006/7001

[commit-bot: I haz the power, 2013-05-27 13:59:30]

Change committed as 202418