Make some changes to the QuicInMemory server to clarify the interface.

Make some changes to the QuicInMemory server to clarify the interface.
Specifically that the cache is indexed by host and path, not by method
nor scheme, nor full URL, nor request headers, etc. In preparation for
making the chrome version more similar.

Merge internal change: 89092881

Committed: https://crrev.com/aa7859a1d935be0283912ab47815a800116a1138
Cr-Commit-Position: refs/heads/master@{#321883}

[Ryan Hamilton, 2015-03-23 02:10:03]

rch@chromium.org changed reviewers:
+ rtenneti@chromium.org

[Ryan Hamilton, 2015-03-23 02:10:03]

Hi Raman, 

I merged this myself. PTAL.

[ramant (doing other things), 2015-03-23 18:03:55]

lgtm

[Ryan Hamilton, 2015-03-23 20:27:48]

The CQ bit was checked by rch@chromium.org

[commit-bot: I haz the power, 2015-03-23 20:29:30]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1028923002/1

[commit-bot: I haz the power, 2015-03-23 20:37:25]

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

[commit-bot: I haz the power, 2015-03-23 20:37:25]

Try jobs failed on following builders:
  chromium_presubmit on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

[Ryan Hamilton, 2015-03-23 22:14:21]

The CQ bit was checked by rch@chromium.org

[Ryan Hamilton, 2015-03-23 22:14:22]

The patchset sent to the CQ was uploaded after l-g-t-m from
rtenneti@chromium.org
Link to the patchset: https://codereview.chromium.org/1028923002/#ps20001
(title: "Fix tests")

[commit-bot: I haz the power, 2015-03-23 22:15:08]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1028923002/20001

[commit-bot: I haz the power, 2015-03-23 22:50:18]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-03-23 22:51:35]

Patchset 2 (id:??) landed as
https://crrev.com/aa7859a1d935be0283912ab47815a800116a1138
Cr-Commit-Position: refs/heads/master@{#321883}