Replace remaining references to imported/wpt with external/wpt

Replace remaining references to imported/wpt with external/wpt

The changes in testharnessreport.js are needed when testing locally
using the file protocol. When running wptserve, the code behind
`location.hostname == 'web-platform.test'` checks are what makes it
work.

BUG=678788
R=qyearsley@chromium.org

Review-Url: https://codereview.chromium.org/2714863003
Cr-Commit-Position: refs/heads/master@{#452856}
Committed: https://chromium.googlesource.com/chromium/src/+/c0828d6983df4be0c9205e65f70574d7f2f9b3e8

[foolip, 2017-02-24 08:47:40]

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

[commit-bot: I haz the power, 2017-02-24 08:47:54]

Dry run: 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, 2017-02-24 10:27:42]

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

[commit-bot: I haz the power, 2017-02-24 10:27:43]

Dry run: Try jobs failed on following builders:
  linux_chromium_rel_ng on master.tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[foolip, 2017-02-24 11:01:39]

PTAL. The linux_chromium_rel_ng failure is unrelated.

[qyearsley, 2017-02-24 16:20:35]

lgtm

[qyearsley, 2017-02-24 16:22:42]

The CQ bit was checked by qyearsley@chromium.org

[commit-bot: I haz the power, 2017-02-24 16:23:09]

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, 2017-02-24 17:26:07]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1487953362459740, "parent_rev":
"4e9e30194950306f9dc3cd7611bba3abe85ef37b", "commit_rev":
"c0828d6983df4be0c9205e65f70574d7f2f9b3e8"}

[commit-bot: I haz the power, 2017-02-24 17:26:43]

Description was changed from

==========
Replace remaining references to imported/wpt with external/wpt

The changes in testharnessreport.js are needed when testing locally
using the file protocol. When running wptserve, the code behind
`location.hostname == 'web-platform.test'` checks are what makes it
work.

BUG=678788
R=qyearsley@chromium.org
==========

to

==========
Replace remaining references to imported/wpt with external/wpt

The changes in testharnessreport.js are needed when testing locally
using the file protocol. When running wptserve, the code behind
`location.hostname == 'web-platform.test'` checks are what makes it
work.

BUG=678788
R=qyearsley@chromium.org

Review-Url: https://codereview.chromium.org/2714863003
Cr-Commit-Position: refs/heads/master@{#452856}
Committed:
https://chromium.googlesource.com/chromium/src/+/c0828d6983df4be0c9205e65f705...
==========

[commit-bot: I haz the power, 2017-02-24 17:26:44]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/c0828d6983df4be0c9205e65f705...