PPB_NetAddress_Private: add getter methods for sockaddr.

PPB_NetAddress_Private: add getter methods for sockaddr.

This CL is mostly contributed by Vinay(vinaya@adobe.com): http://codereview.chromium.org/9235035

Comparing with 9235035, this change:
- fixes the NaCl Proxy.
- adds untrusted tests.
- does other small fixes.

BUG=None
TEST=test_net_address_private and test_net_address_private_untrusted

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=121106

[yzshen1, 2012-02-05 22:56:26]

Hi, Brett.

Would you please take a look?
Please diff against the patch set 1 to see what I have modified.

Thanks!

[brettw, 2012-02-06 20:17:05]

lgtm

[commit-bot: I haz the power, 2012-02-06 20:21:16]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/yzshen@chromium.org/9307115/2009

[commit-bot: I haz the power, 2012-02-06 20:21:27]

Presubmit check for 9307115-2009 failed and returned exit status 1.

Running presubmit commit checks ...

** Presubmit Warnings **
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  ppapi/native_client/src/shared/ppapi_proxy/ppb_rpc_server.cc, line 3019, 89
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  ppapi/native_client/src/shared/ppapi_proxy/ppb_rpc_server.cc, line 3020, 85
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  ppapi/native_client/src/shared/ppapi_proxy/ppb_rpc_server.cc, line 3021, 92
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