Rename BasicURLRequestContext.

Rename BasicURLRequestContext.

The name "BasicURLRequestContext" is misleading, as it is *more* than
just a URLRequestContext. Instead, it's a URLRequestContext with added
storage to contain owned-pointers to the context's components.

This rename better reflects that distinction.

BUG=none

Committed: https://crrev.com/7f36a61b25654fdcbfd4e4fd6f7476b75908169e
Cr-Commit-Position: refs/heads/master@{#342984}

[wjmaclean, 2015-08-11 13:29:56]

The CQ bit was checked by wjmaclean@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-08-11 13:30:08]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1273363006/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1273363006/1

[wjmaclean, 2015-08-11 13:31:38]

wjmaclean@chromium.org changed reviewers:
+ garykac@chromium.org, mmenke@chromium.org

[wjmaclean, 2015-08-11 13:31:38]

Minor rename ...

garykac@chromium.org: Please review changes in remoting::

mmenke@chromium.org: Please review changes in net::

[commit-bot: I haz the power, 2015-08-11 14:38:15]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-08-11 14:38:15]

Dry run: This issue passed the CQ dry run.

[mmenke, 2015-08-11 15:18:08]

LGTM

[Jamie, 2015-08-11 16:34:11]

jamiewalch@chromium.org changed reviewers:
+ jamiewalch@chromium.org

[Jamie, 2015-08-11 16:34:12]

remoting/ lgtm

[wjmaclean, 2015-08-12 07:12:46]

The CQ bit was checked by wjmaclean@chromium.org

[commit-bot: I haz the power, 2015-08-12 07:12:50]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1273363006/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1273363006/1

[commit-bot: I haz the power, 2015-08-12 07:31:35]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-08-12 07:32:52]

Patchset 1 (id:??) landed as
https://crrev.com/7f36a61b25654fdcbfd4e4fd6f7476b75908169e
Cr-Commit-Position: refs/heads/master@{#342984}