Revert of Refactor WebUSB LayoutTests to separate out the Mojo service mocks

Revert of Refactor WebUSB LayoutTests to separate out the Mojo service mocks (patchset #1 id:1 of https://codereview.chromium.org/2775323003/ )

Reason for revert:
Breaks leak bot:

https://uberchromegw.corp.google.com/i/chromium.webkit/builders/WebKit%20Linux%20Trusty%20Leak/builds/3557

* usb/test-polyfil.html
* usb/usb-connection-event.html
* usb/usb.html
* usb/usbDevice-iframe.html
* usb/usbDevice.html

seem to be leaking :(

Original issue's description:
> Refactor WebUSB LayoutTests to separate out the Mojo service mocks
> 
> In preparation for being able to upstream the existing WebUSB tests to
> the Web Platform Tests repository this patch splits out the Mojo
> service mocks into webusb-test.js. This file is a polyfil for a
> fictional "WebUSB Test API" that could in theory be implemented by any
> browser (an idea borrowed from a proposed plan for Web Bluetooth).
> 
> BUG=705734
> 
> Review-Url: https://codereview.chromium.org/2775323003
> Cr-Commit-Position: refs/heads/master@{#460978}
> Committed: https://chromium.googlesource.com/chromium/src/+/e1edfbbb4b3a192e210c031628e4f12aa93057cd

TBR=yzshen@chromium.org,reillyg@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=705734
Review-Url: https://codereview.chromium.org/2791573002
Cr-Commit-Position: refs/heads/master@{#461045}
Committed: https://chromium.googlesource.com/chromium/src/+/245d44d8347cb000d4d78b46b9f120e3fc9f10d3

[ortuno, 2017-03-31 05:02:06]

The CQ bit was checked by ortuno@chromium.org

[ortuno, 2017-03-31 05:02:07]

Created Revert of Refactor WebUSB LayoutTests to separate out the Mojo service
mocks

[commit-bot: I haz the power, 2017-03-31 05:03:00]

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, 2017-03-31 05:03:49]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1490936526273170, "parent_rev":
"c89cc32d2f148978d67d1acdbf855d599bb515d6", "commit_rev":
"54294673539d19565be56ba76c8d388c9cebaa76"}

[commit-bot: I haz the power, 2017-03-31 05:09:06]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1490936526273170, "parent_rev":
"b4b59de15639559e9fbdc818d3ca1ca960dbc0c0", "commit_rev":
"245d44d8347cb000d4d78b46b9f120e3fc9f10d3"}

[commit-bot: I haz the power, 2017-03-31 05:10:36]

Description was changed from

==========
Revert of Refactor WebUSB LayoutTests to separate out the Mojo service mocks
(patchset #1 id:1 of https://codereview.chromium.org/2775323003/ )

Reason for revert:
Breaks leak bot:

https://uberchromegw.corp.google.com/i/chromium.webkit/builders/WebKit%20Linu...

* usb/test-polyfil.html
* usb/usb-connection-event.html
* usb/usb.html
* usb/usbDevice-iframe.html
* usb/usbDevice.html

seem to be leaking :(

Original issue's description:
> Refactor WebUSB LayoutTests to separate out the Mojo service mocks
> 
> In preparation for being able to upstream the existing WebUSB tests to
> the Web Platform Tests repository this patch splits out the Mojo
> service mocks into webusb-test.js. This file is a polyfil for a
> fictional "WebUSB Test API" that could in theory be implemented by any
> browser (an idea borrowed from a proposed plan for Web Bluetooth).
> 
> BUG=705734
> 
> Review-Url: https://codereview.chromium.org/2775323003
> Cr-Commit-Position: refs/heads/master@{#460978}
> Committed:
https://chromium.googlesource.com/chromium/src/+/e1edfbbb4b3a192e210c031628e4...

TBR=yzshen@chromium.org,reillyg@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=705734
==========

to

==========
Revert of Refactor WebUSB LayoutTests to separate out the Mojo service mocks
(patchset #1 id:1 of https://codereview.chromium.org/2775323003/ )

Reason for revert:
Breaks leak bot:

https://uberchromegw.corp.google.com/i/chromium.webkit/builders/WebKit%20Linu...

* usb/test-polyfil.html
* usb/usb-connection-event.html
* usb/usb.html
* usb/usbDevice-iframe.html
* usb/usbDevice.html

seem to be leaking :(

Original issue's description:
> Refactor WebUSB LayoutTests to separate out the Mojo service mocks
> 
> In preparation for being able to upstream the existing WebUSB tests to
> the Web Platform Tests repository this patch splits out the Mojo
> service mocks into webusb-test.js. This file is a polyfil for a
> fictional "WebUSB Test API" that could in theory be implemented by any
> browser (an idea borrowed from a proposed plan for Web Bluetooth).
> 
> BUG=705734
> 
> Review-Url: https://codereview.chromium.org/2775323003
> Cr-Commit-Position: refs/heads/master@{#460978}
> Committed:
https://chromium.googlesource.com/chromium/src/+/e1edfbbb4b3a192e210c031628e4...

TBR=yzshen@chromium.org,reillyg@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=705734

Review-Url: https://codereview.chromium.org/2791573002
Cr-Commit-Position: refs/heads/master@{#461045}
Committed:
https://chromium.googlesource.com/chromium/src/+/245d44d8347cb000d4d78b46b9f1...
==========

[commit-bot: I haz the power, 2017-03-31 05:10:37]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/245d44d8347cb000d4d78b46b9f1...

[Reilly Grant (use Gerrit), 2017-03-31 20:53:41]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/2788463005/ by reillyg@chromium.org.

The reason for reverting is: Fixed the leak..