Fix compilation of components_unittests with disable_file_support=true.

Fix compilation of components_unittests with disable_file_support=true.

The test components/update_client/crx_downloader_unittest.cc depends
on net::LocalHostTestURLRequestInterceptor class that is not compiled
when disable_file_support is set to true.

Add a new file src/net/features.gni to allow conditional compilation
based on that flag from outside of //net.

BUG=640686
Committed: https://crrev.com/eb265869a6f4cbf1472b3762f83779cb01b6c07e
Cr-Commit-Position: refs/heads/master@{#417287}

[sdefresne, 2016-09-08 07:54:21]

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

[commit-bot: I haz the power, 2016-09-08 07:54:38]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[sdefresne, 2016-09-08 07:57:38]

sdefresne@chromium.org changed reviewers:
+ asargent@chromium.org, mef@chromium.org

[sdefresne, 2016-09-08 07:57:38]

This fix is required for fixing ios-simulator-cronet bot that build with
disable_file_support set to true (see
https://codereview.chromium.org/2312963002/).

mef: can you take a look as OWNERS of //net

asargent: can you take a look as OWNERS of //components/update_client

[commit-bot: I haz the power, 2016-09-08 08:48:59]

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

[commit-bot: I haz the power, 2016-09-08 08:48:59]

Dry run: Try jobs failed on following builders:
  win_clang on master.tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_clang/builds/...)

[mef, 2016-09-08 13:25:50]

On 2016/09/08 07:57:38, sdefresne wrote:
> This fix is required for fixing ios-simulator-cronet bot that build with
> disable_file_support set to true (see
> https://codereview.chromium.org/2312963002/).
> 
> mef: can you take a look as OWNERS of //net
> 
> asargent: can you take a look as OWNERS of //components/update_client

//net lgtm

[asargent_no_longer_on_chrome, 2016-09-08 13:39:03]

lgtm

[sdefresne, 2016-09-08 13:55:19]

The CQ bit was checked by sdefresne@chromium.org

[commit-bot: I haz the power, 2016-09-08 13:55:34]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-09-08 14:27:31]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-08 14:29:37]

Description was changed from

==========
Fix compilation of components_unittests with disable_file_support=true.

The test components/update_client/crx_downloader_unittest.cc depends
on net::LocalHostTestURLRequestInterceptor class that is not compiled
when disable_file_support is set to true.

Add a new file src/net/features.gni to allow conditional compilation
based on that flag from outside of //net.

BUG=640686
==========

to

==========
Fix compilation of components_unittests with disable_file_support=true.

The test components/update_client/crx_downloader_unittest.cc depends
on net::LocalHostTestURLRequestInterceptor class that is not compiled
when disable_file_support is set to true.

Add a new file src/net/features.gni to allow conditional compilation
based on that flag from outside of //net.

BUG=640686

Committed: https://crrev.com/eb265869a6f4cbf1472b3762f83779cb01b6c07e
Cr-Commit-Position: refs/heads/master@{#417287}
==========

[commit-bot: I haz the power, 2016-09-08 14:29:37]

Patchset 1 (id:??) landed as
https://crrev.com/eb265869a6f4cbf1472b3762f83779cb01b6c07e
Cr-Commit-Position: refs/heads/master@{#417287}