Reland "webnn: Remove sync methods"

[chromium-wpt-export-bot]

This is a reland of commit a3e84dde09e099bebbe4793ffaa70679168130d6

This CL contains a few additional changes:

• Enables the async APIs on workers, which was causing bots to fail
  since workers could not call createContext()
• Rebaselines WPTs accordingly
• Updates the WPT expectations for the webnn-service-enabled virtual
  test suite

Original change's description:

webnn: Remove sync methods

See webmachinelearning/webnn#548

Deletes all sync methods and simplifies the names of all "Async"
methods - e.g. BuildAsync() -> Build()

Bug: 40283536, 41481333
Change-Id: I3b38d987cb4641ea41ab9a974c46dcba16d5c108
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5292884
Commit-Queue: Austin Sullivan <asully@chromium.org>
Reviewed-by: Reilly Grant <reillyg@chromium.org>
Reviewed-by: ningxin hu <ningxin.hu@intel.com>
Reviewed-by: Alex Gough <ajgo@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1261223}

Cq-Include-Trybots: luci.chromium.try:win11-x64-fyi-rel
Bug: 40283536, 41481333, 41485898
Change-Id: Iffcb922b8175a7181deba1f4c2faa953010ae5c0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5303774
Reviewed-by: Reilly Grant <reillyg@chromium.org>
Commit-Queue: Austin Sullivan <asully@chromium.org>
Reviewed-by: Rafael Cintron <rafael.cintron@microsoft.com>
Reviewed-by: Alex Gough <ajgo@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1262043}

[wpt-pr-bot]

The review process for this patch is being conducted in the Chromium project.

[WeizhongX]

79:44.65 INFO Ran 1 of 10 iterations.
79:44.65 wptserve INFO Stopped http server on 127.0.0.1:8000
79:44.65 wptserve INFO Stopped WebTransport over HTTP/3 server on 127.0.0.1:11000
79:44.73 wptserve INFO Stopped http server on 127.0.0.1:8443
79:45.05 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
79:45.05 wptserve INFO Stopped http server on 127.0.0.1:8001
79:45.05 wptserve INFO Stopped http server on 127.0.0.1:8002
79:45.05 wptserve INFO Stopped http server on 127.0.0.1:8445
79:45.05 wptserve INFO Stopped http server on 127.0.0.1:8444
79:45.05 wptserve INFO Stopped http server on 127.0.0.1:9000
79:45.05 wptserve INFO Stopped http server on 127.0.0.1:8003
79:45.05 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
79:45.05 wptserve INFO Stopped http server on 127.0.0.1:8446
79:45.19 INFO Removed font: Ahem.ttf
79:45.23 INFO Closing logging queue
79:45.23 INFO queue closed
79:45.29 INFO ::: Ran 1 of expected 10 iterations.
79:45.29 INFO ::: Reached iteration timeout before finishing 2 or more repeat runs.
79:45.29 INFO ::: At least 2 successful repeat runs are required to validate stability.
79:45.29 INFO ::: Running tests in a loop with restarts 10 times : FAIL
79:45.29 INFO :::
79:45.29 WARNING ::: Test verification TIMEOUT

[WeizhongX]

@KyleJu @jcscottiii The log says "Test verification TIMEOUT". Can you pls take a look?