PlzNavigate: Fix wrong SourceLocation.

PlzNavigate: Fix wrong SourceLocation.

Before this CL, when an iframe is asked to navigate, the SourceLocation
used was the wrong one. It was always the one of the current document, even
when the navigation was initiated by another frame.

TEST=http/tests/security/contentSecurityPolicy/frame-src-cross-origin-load.html

The test still does not pass however. It is due to
https://crbug.com/718942 which is not related to this issue.

BUG=690946
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_chromium_browser_side_navigation_rel

Review-Url: https://codereview.chromium.org/2901223003
Cr-Original-Commit-Position: refs/heads/master@{#476613}
Review-Url: https://codereview.chromium.org/2924293002 .
Cr-Commit-Position: refs/branch-heads/3112@{#257}
Cr-Branched-From: b6460e24cf59f429d69de255538d0fc7a425ccf9-refs/heads/master@{#474897}
Committed: https://chromium.googlesource.com/chromium/src/+/536326a013d7b979106706b80e964dc803c160c5

[jam, 2017-06-08 17:20:20]

Description was changed from

==========
PlzNavigate: Fix wrong SourceLocation.

Before this CL, when an iframe is asked to navigate, the SourceLocation
used was the wrong one. It was always the one of the current document, even
when the navigation was initiated by another frame.

TEST=http/tests/security/contentSecurityPolicy/frame-src-cross-origin-load.html

The test still does not pass however. It is due to
https://crbug.com/718942 which is not related to this issue.

BUG=690946
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_chromium_browser_side_navigation_rel

Review-Url: https://codereview.chromium.org/2901223003
Cr-Commit-Position: refs/heads/master@{#476613}
(cherry picked from commit ccfe0b5a32bc0ed36a95eb1da8e7f4b03268a661)
==========

to

==========
PlzNavigate: Fix wrong SourceLocation.

Before this CL, when an iframe is asked to navigate, the SourceLocation
used was the wrong one. It was always the one of the current document, even
when the navigation was initiated by another frame.

TEST=http/tests/security/contentSecurityPolicy/frame-src-cross-origin-load.html

The test still does not pass however. It is due to
https://crbug.com/718942 which is not related to this issue.

BUG=690946
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_chromium_browser_side_navigation_rel

Review-Url: https://codereview.chromium.org/2901223003
Cr-Original-Commit-Position: refs/heads/master@{#476613}
Review-Url: https://codereview.chromium.org/2924293002 .
Cr-Commit-Position: refs/branch-heads/3112@{#257}
Cr-Branched-From:
b6460e24cf59f429d69de255538d0fc7a425ccf9-refs/heads/master@{#474897}
Committed:
https://chromium.googlesource.com/chromium/src/+/536326a013d7b979106706b80e96...
==========

[jam, 2017-06-08 17:20:21]

Committed patchset #1 (id:1) manually as
536326a013d7b979106706b80e964dc803c160c5.