Fix CH Width header when preloadScanner and <picture> are involved

Fix CH Width header when preloadScanner and <picture> are involved

When images are loaded by the preloader and <picture> is involved,
there was a bug where the sent sizes value was related to the fallback
<img> tag rather than the picked resource.
This CL fixes that.

BUG=458983
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=197948

[Yoav Weiss, 2015-06-27 15:11:11]

yoav@yoav.ws changed reviewers:
+ mkwst@chromium.org

[Mike West, 2015-06-27 15:11:51]

On 2015/06/27 at 15:11:11, yoav wrote:
> 

Patch failure. ;)

[Mike West, 2015-06-27 15:16:49]

LGTM once you fix the patch.

[Yoav Weiss, 2015-06-27 15:22:31]

The CQ bit was checked by yoav@yoav.ws

[Yoav Weiss, 2015-06-27 15:22:31]

The patchset sent to the CQ was uploaded after l-g-t-m from mkwst@chromium.org
Link to the patchset: https://codereview.chromium.org/1214663004/#ps20001
(title: "rebase")

[commit-bot: I haz the power, 2015-06-27 15:22:38]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1214663004/20001

[commit-bot: I haz the power, 2015-06-27 15:55:32]

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

[commit-bot: I haz the power, 2015-06-27 15:55:32]

Exceeded global retry quota

[Mike West, 2015-06-27 17:23:47]

On 2015/06/27 at 15:55:32, commit-bot wrote:
> Exceeded global retry quota

Failing:

    HTMLPreloadScannerTest.testImages
    HTMLPreloadScannerTest.testImagesWithViewport
    HTMLPreloadScannerTest.testImagesWithViewportDisabled
    HTMLPreloadScannerTest.testMetaAcceptCH

:(

[Yoav Weiss, 2015-06-28 05:06:56]

On 2015/06/27 17:23:47, Mike West wrote:
> On 2015/06/27 at 15:55:32, commit-bot wrote:
> > Exceeded global retry quota
> 
> Failing:
> 
>     HTMLPreloadScannerTest.testImages
>     HTMLPreloadScannerTest.testImagesWithViewport
>     HTMLPreloadScannerTest.testImagesWithViewportDisabled
>     HTMLPreloadScannerTest.testMetaAcceptCH
> 
> :(

Dumb typo... Fixed

[Yoav Weiss, 2015-06-28 08:11:43]

The CQ bit was checked by yoav@yoav.ws

[Yoav Weiss, 2015-06-28 08:11:44]

The patchset sent to the CQ was uploaded after l-g-t-m from mkwst@chromium.org
Link to the patchset: https://codereview.chromium.org/1214663004/#ps40001
(title: "Fixed bug")

[commit-bot: I haz the power, 2015-06-28 08:11:50]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1214663004/40001

[commit-bot: I haz the power, 2015-06-28 08:50:25]

Committed patchset #3 (id:40001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=197948

[Noel Gordon, 2015-06-28 16:41:54]

A revert of this CL (patchset #3 id:40001) has been created in
https://codereview.chromium.org/1217703002/ by noel@chromium.org.

The reason for reverting is: Seems to have broken the Mac10.9 Tests (dbg) on the
chromium waterfall, see build #7701

.