Add new Cronet exception class for QUIC errors

Add new Cronet exception class for QUIC errors

Create a subclass of CronetException, called QuicException, which contains the
detailed QUIC error code when it exists.
Propagate the error code from NetErrorDetails through Cronet. For now,
only UrlRequest reports the detailed error, not BidirectionalStream.

BUG=614507
Review-Url: https://codereview.chromium.org/2069303002
Cr-Commit-Position: refs/heads/master@{#403525}
(cherry picked from commit a8228bdbdd1840d925baf93067057daccae1e60a)

R=mgersh@chromium.org, xunjieli@chromium.org

Committed: https://chromium.googlesource.com/chromium/src/+/0c9d4e56fd928a79c5ec4f947771a5b9631f064a

[mef, 2016-07-11 15:33:14]

mef@chromium.org changed reviewers:
+ mgersh@chromium.org, xunjieli@chromium.org

[mef, 2016-07-11 15:33:14]

PTAL. This is merging Miriam's CL into M53.

[xunjieli, 2016-07-11 15:35:01]

lgtm

[mgersh, 2016-07-11 15:43:15]

lgtm

[mef, 2016-07-11 15:47:44]

Description was changed from

==========
Add new Cronet exception class for QUIC errors

Create a subclass of CronetException, called QuicException, which contains the
detailed QUIC error code when it exists.
Propagate the error code from NetErrorDetails through Cronet. For now,
only UrlRequest reports the detailed error, not BidirectionalStream.

BUG=614507

Review-Url: https://codereview.chromium.org/2069303002
Cr-Commit-Position: refs/heads/master@{#403525}
(cherry picked from commit a8228bdbdd1840d925baf93067057daccae1e60a)
==========

to

==========
Add new Cronet exception class for QUIC errors

Create a subclass of CronetException, called QuicException, which contains the
detailed QUIC error code when it exists.
Propagate the error code from NetErrorDetails through Cronet. For now,
only UrlRequest reports the detailed error, not BidirectionalStream.

BUG=614507

Review-Url: https://codereview.chromium.org/2069303002
Cr-Commit-Position: refs/heads/master@{#403525}
(cherry picked from commit a8228bdbdd1840d925baf93067057daccae1e60a)

R=mgersh@chromium.org, xunjieli@chromium.org

Committed:
https://chromium.googlesource.com/chromium/src/+/0c9d4e56fd928a79c5ec4f947771...
==========

[mef, 2016-07-11 15:47:45]

Committed patchset #1 (id:1) manually as
0c9d4e56fd928a79c5ec4f947771a5b9631f064a (presubmit successful).