Revert of Apply Referrer-Policy header when following redirects

Revert of Apply Referrer-Policy header when following redirects (patchset #17 id:320001 of https://codereview.chromium.org/2100583002/ )

Reason for revert:
Broke msan tests https://build.chromium.org/p/chromium.memory.fyi/builders/Linux%20MSan%20Tests/builds/17218/steps/net_unittests%20on%20Ubuntu-12.04/logs/URLRequestJob.RedirectTransactionWithReferrerPolicyHeader

Original issue's description:
> Apply Referrer-Policy header when following redirects
>
> When a Referrer-Policy header is received during a redirect,
> URLRequestJob parses it and updates the referrer and referrer policy on
> the request, if necessary.
>
> The Referrer-Policy header is being implemented as an experimental web
> platform feature. The experimental web platform feature flag is plumbed
> to URLRequestJob via a boolean on URLRequestContext. This flag should be
> temporary and only live until the Referrer-Policy feature ships.
>
> Intent to Implement: https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/Umj9iVRJM70
> Implementation plan: https://docs.google.com/document/d/1SyQhP6Y7BHIQXWL8S1saWqMuar4hoWLGigQuHmizg3g/edit
>
> BUG=619228
>
> Committed: https://crrev.com/550ba7f9533922cfeac9709d99815cec9b2ad52a
> Cr-Commit-Position: refs/heads/master@{#403017}

TBR=jochen@chromium.org,eugenebut@chromium.org,mmenke@chromium.org,palmer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=619228
Committed: https://crrev.com/ede2091f3f4a3a836e3e2efb13bd8c691a60f6d8
Cr-Commit-Position: refs/heads/master@{#403075}

[estark, 2016-06-30 02:57:58]

The CQ bit was checked by estark@chromium.org

[estark, 2016-06-30 02:57:59]

Created Revert of Apply Referrer-Policy header when following redirects

[commit-bot: I haz the power, 2016-06-30 02:58:12]

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, 2016-06-30 02:59:11]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-30 03:00:28]

Description was changed from

==========
Revert of Apply Referrer-Policy header when following redirects (patchset #17
id:320001 of https://codereview.chromium.org/2100583002/ )

Reason for revert:
Broke msan tests
https://build.chromium.org/p/chromium.memory.fyi/builders/Linux%20MSan%20Test...

Original issue's description:
> Apply Referrer-Policy header when following redirects
> 
> When a Referrer-Policy header is received during a redirect,
> URLRequestJob parses it and updates the referrer and referrer policy on
> the request, if necessary.
> 
> The Referrer-Policy header is being implemented as an experimental web
> platform feature. The experimental web platform feature flag is plumbed
> to URLRequestJob via a boolean on URLRequestContext. This flag should be
> temporary and only live until the Referrer-Policy feature ships.
> 
> Intent to Implement:
https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/Umj9iVRJM70
> Implementation plan:
https://docs.google.com/document/d/1SyQhP6Y7BHIQXWL8S1saWqMuar4hoWLGigQuHmizg...
> 
> BUG=619228
> 
> Committed: https://crrev.com/550ba7f9533922cfeac9709d99815cec9b2ad52a
> Cr-Commit-Position: refs/heads/master@{#403017}

TBR=jochen@chromium.org,eugenebut@chromium.org,mmenke@chromium.org,palmer@chr...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=619228
==========

to

==========
Revert of Apply Referrer-Policy header when following redirects (patchset #17
id:320001 of https://codereview.chromium.org/2100583002/ )

Reason for revert:
Broke msan tests
https://build.chromium.org/p/chromium.memory.fyi/builders/Linux%20MSan%20Test...

Original issue's description:
> Apply Referrer-Policy header when following redirects
>
> When a Referrer-Policy header is received during a redirect,
> URLRequestJob parses it and updates the referrer and referrer policy on
> the request, if necessary.
>
> The Referrer-Policy header is being implemented as an experimental web
> platform feature. The experimental web platform feature flag is plumbed
> to URLRequestJob via a boolean on URLRequestContext. This flag should be
> temporary and only live until the Referrer-Policy feature ships.
>
> Intent to Implement:
https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/Umj9iVRJM70
> Implementation plan:
https://docs.google.com/document/d/1SyQhP6Y7BHIQXWL8S1saWqMuar4hoWLGigQuHmizg...
>
> BUG=619228
>
> Committed: https://crrev.com/550ba7f9533922cfeac9709d99815cec9b2ad52a
> Cr-Commit-Position: refs/heads/master@{#403017}

TBR=jochen@chromium.org,eugenebut@chromium.org,mmenke@chromium.org,palmer@chr...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=619228

Committed: https://crrev.com/ede2091f3f4a3a836e3e2efb13bd8c691a60f6d8
Cr-Commit-Position: refs/heads/master@{#403075}
==========

[commit-bot: I haz the power, 2016-06-30 03:00:29]

Patchset 1 (id:??) landed as
https://crrev.com/ede2091f3f4a3a836e3e2efb13bd8c691a60f6d8
Cr-Commit-Position: refs/heads/master@{#403075}

[estark, 2016-06-30 16:56:57]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/2111623003/ by estark@chromium.org.

The reason for reverting is: Relanding after fixing uninitialized |read_handler|
field in MockTransaction.