[Image fetcher] Add Content-Location header to image_fetcher::RequestMetadata

[Image fetcher] Add Content-Location header to image_fetcher::RequestMetadata

Previous CL (2793983002) added a pointer to net::HttpResponseHeaders
into image_fetcher::RequestMetadata. This was flawed because the object
got deleted before the callback to ImageFetcher was called. A solution
would be to create a copy of the headers object from its raw_headers()
content. This seems too heavy for a corner-use case needing one header.

As a solution, this CL removes the what has been added by the previous
CL and adds a new struct field for this particular use case.

BUG=644102
Review-Url: https://codereview.chromium.org/2807143002
Cr-Commit-Position: refs/heads/master@{#463260}
Committed: https://chromium.googlesource.com/chromium/src/+/fe52c7f885b342a38e4351317b63f56982cb8955

[jkrcal, 2017-04-10 13:25:41]

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

[commit-bot: I haz the power, 2017-04-10 13:26:01]

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

[jkrcal, 2017-04-10 13:26:05]

jkrcal@chromium.org changed reviewers:
+ markusheintz@chromium.org

[jkrcal, 2017-04-10 13:26:06]

Markus, could you PTAL?

[markusheintz_, 2017-04-10 13:47:22]

On 2017/04/10 13:26:06, jkrcal wrote:
> Markus, could you PTAL?

LGTM

[commit-bot: I haz the power, 2017-04-10 14:14:46]

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

[commit-bot: I haz the power, 2017-04-10 14:14:47]

Dry run: This issue passed the CQ dry run.

[jkrcal, 2017-04-10 14:32:44]

The CQ bit was checked by jkrcal@chromium.org

[commit-bot: I haz the power, 2017-04-10 14:33:03]

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, 2017-04-10 14:37:24]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1491834764026670, "parent_rev":
"44437ac456c78ed780991e41f7a0e5ce7233f34b", "commit_rev":
"fe52c7f885b342a38e4351317b63f56982cb8955"}

[commit-bot: I haz the power, 2017-04-10 14:38:14]

Description was changed from

==========
[Image fetcher] Add Content-Location header to image_fetcher::RequestMetadata

Previous CL (2793983002) added a pointer to net::HttpResponseHeaders
into image_fetcher::RequestMetadata. This was flawed because the object
got deleted before the callback to ImageFetcher was called. A solution
would be to create a copy of the headers object from its raw_headers()
content. This seems too heavy for a corner-use case needing one header.

As a solution, this CL removes the what has been added by the previous
CL and adds a new struct field for this particular use case.

BUG=644102
==========

to

==========
[Image fetcher] Add Content-Location header to image_fetcher::RequestMetadata

Previous CL (2793983002) added a pointer to net::HttpResponseHeaders
into image_fetcher::RequestMetadata. This was flawed because the object
got deleted before the callback to ImageFetcher was called. A solution
would be to create a copy of the headers object from its raw_headers()
content. This seems too heavy for a corner-use case needing one header.

As a solution, this CL removes the what has been added by the previous
CL and adds a new struct field for this particular use case.

BUG=644102

Review-Url: https://codereview.chromium.org/2807143002
Cr-Commit-Position: refs/heads/master@{#463260}
Committed:
https://chromium.googlesource.com/chromium/src/+/fe52c7f885b342a38e4351317b63...
==========

[commit-bot: I haz the power, 2017-04-10 14:38:15]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/fe52c7f885b342a38e4351317b63...