Move data_reduction_proxy_enabled pref to profile_impl_io_data.

Move data_reduction_proxy_enabled pref to profile_impl_io_data.

Data reduction proxy should never be enabled for incognito tabs. So
moving it to profile_impl_io_data which is specific to non-ingocnito.

BUG=412873
Committed: https://crrev.com/08371872bc74c3ecfee9115551adb1e66fa5532d
Cr-Commit-Position: refs/heads/master@{#299020}

[Not at Google. Contact bengr, 2014-10-08 18:21:27]

kundaji@chromium.org changed reviewers:
+ mmenke@chromium.org

[Not at Google. Contact bengr, 2014-10-08 18:22:11]

mmenke:
  chrome/browser/profiles/*

[mmenke, 2014-10-09 14:49:35]

LGTM

https://codereview.chromium.org/643443002/diff/20001/chrome/browser/profiles/...
File chrome/browser/profiles/profile_impl_io_data.cc (right):

https://codereview.chromium.org/643443002/diff/20001/chrome/browser/profiles/...
chrome/browser/profiles/profile_impl_io_data.cc:118:
io_data_->data_reduction_proxy_enabled()->Destroy();
Think it's more consistent to do this before ShutdownOnUIThread (Shutdown the
class then shutdown its parent - that's how everything else is shutdown here)

[Not at Google. Contact bengr, 2014-10-09 22:24:41]

https://codereview.chromium.org/643443002/diff/20001/chrome/browser/profiles/...
File chrome/browser/profiles/profile_impl_io_data.cc (right):

https://codereview.chromium.org/643443002/diff/20001/chrome/browser/profiles/...
chrome/browser/profiles/profile_impl_io_data.cc:118:
io_data_->data_reduction_proxy_enabled()->Destroy();
On 2014/10/09 14:49:35, mmenke wrote:
> Think it's more consistent to do this before ShutdownOnUIThread (Shutdown the
> class then shutdown its parent - that's how everything else is shutdown here)

Done.

[Not at Google. Contact bengr, 2014-10-09 23:54:59]

The CQ bit was checked by kundaji@chromium.org

[commit-bot: I haz the power, 2014-10-10 00:00:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/643443002/50001

[commit-bot: I haz the power, 2014-10-10 00:17:11]

Committed patchset #3 (id:50001)

[commit-bot: I haz the power, 2014-10-10 00:18:15]

Patchset 3 (id:??) landed as
https://crrev.com/08371872bc74c3ecfee9115551adb1e66fa5532d
Cr-Commit-Position: refs/heads/master@{#299020}