Remove cronet dependency on org.apache.http.

Remove cronet dependency on org.apache.http.

Remaps status codes to ones from HttpURLConnection.
Changes ConnectTimoutException to SocketTimeoutException.

BUG=468861
Committed: https://crrev.com/4746a790d8682c550b2a57381985c3646e51096f
Cr-Commit-Position: refs/heads/master@{#330103}

[Yaron, 2015-05-15 15:20:21]

yfriedman@chromium.org changed reviewers:
+ xunjieli@chromium.org

[Yaron, 2015-05-15 15:20:22]

https://codereview.chromium.org/1141943003/diff/1/components/cronet/android/j...
File components/cronet/android/java/src/org/chromium/net/ChromiumUrlRequest.java
(right):

https://codereview.chromium.org/1141943003/diff/1/components/cronet/android/j...
components/cronet/android/java/src/org/chromium/net/ChromiumUrlRequest.java:189:
return new SocketTimeoutException("Connection timed out");
Not sure how we originally chose ConnectTimeoutException but it subclasses
InterruptedIoException which this one does too. Alternatively, I could define a
custom exception and throw that if you want to be more specific.

[xunjieli, 2015-05-15 15:34:38]

LGTM. I don't see a reference of the ConnectTimeoutException when searching in
the internal code base, so I am assuming embedders aren't depending on the error
explicitly. 

+mef so he's aware of this change, since it can potentially affect embedders.

[Yaron, 2015-05-15 15:42:56]

The CQ bit was checked by yfriedman@chromium.org

[commit-bot: I haz the power, 2015-05-15 15:43:29]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1141943003/1

[commit-bot: I haz the power, 2015-05-15 16:08:58]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-15 16:10:46]

Patchset 1 (id:??) landed as
https://crrev.com/4746a790d8682c550b2a57381985c3646e51096f
Cr-Commit-Position: refs/heads/master@{#330103}