Update for surfman surfaceless changes

[pcwalton]

This needs servo/webxr#82 and asajeffrey/surfman-chains#3. Once those are merged we should update the Cargo.tomls to pin to a surfman revision.

---

• ./mach build -d does not report any errors
• ./mach test-tidy does not report any errors
• These changes fix #___ (GitHub issue number if applicable)

• There are tests for these changes OR
• These changes do not require tests because ___

[community-tc-integration]

Submitting the task to Taskcluster failed. Details

Taskcluster-GitHub attempted to create a task for this event with the following scopes:

[
  "assume:repo:github.com/servo/servo:pull-request",
  "queue:route:statuses",
  "queue:scheduler-id:taskcluster-github"
]

The expansion of these scopes is not sufficient to create the task, leading to the following:

Client ID static/taskcluster/github does not have sufficient scopes and is missing the following scopes:

{
  "AnyOf": [
    {
      "AnyOf": [
        "queue:create-task:highest:aws-provisioner-v1/servo-docker-untrusted",
        "queue:create-task:very-high:aws-provisioner-v1/servo-docker-untrusted",
        "queue:create-task:high:aws-provisioner-v1/servo-docker-untrusted",
        "queue:create-task:medium:aws-provisioner-v1/servo-docker-untrusted",
        "queue:create-task:low:aws-provisioner-v1/servo-docker-untrusted",
        "queue:create-task:very-low:aws-provisioner-v1/servo-docker-untrusted",
        "queue:create-task:lowest:aws-provisioner-v1/servo-docker-untrusted"
      ]
    },
    {
      "AnyOf": [
        "queue:create-task:aws-provisioner-v1/servo-docker-untrusted",
        {
          "AllOf": [
            "queue:define-task:aws-provisioner-v1/servo-docker-untrusted",
            "queue:task-group-id:taskcluster-github/clwz0ZpQT1adoLyYbpcx2A",
            "queue:schedule-task:taskcluster-github/clwz0ZpQT1adoLyYbpcx2A/clwz0ZpQT1adoLyYbpcx2A"
          ]
        }
      ]
    }
  ]
}

This request requires the client to satisfy the following scope expression:

{
  "AllOf": [
    "assume:repo:github.com/servo/servo:pull-request",
    "queue:route:tc-treeherder.v2._/servo-prs.cc3cb5820c39f8b12ce781db397b22eb46c36196",
    "queue:route:tc-treeherder-staging.v2._/servo-prs.cc3cb5820c39f8b12ce781db397b22eb46c36196",
    "queue:route:statuses",
    {
      "AnyOf": [
        {
          "AllOf": [
            "queue:scheduler-id:taskcluster-github",
            {
              "AnyOf": [
                "queue:create-task:highest:aws-provisioner-v1/servo-docker-untrusted",
                "queue:create-task:very-high:aws-provisioner-v1/servo-docker-untrusted",
                "queue:create-task:high:aws-provisioner-v1/servo-docker-untrusted",
                "queue:create-task:medium:aws-provisioner-v1/servo-docker-untrusted",
                "queue:create-task:low:aws-provisioner-v1/servo-docker-untrusted",
                "queue:create-task:very-low:aws-provisioner-v1/servo-docker-untrusted",
                "queue:create-task:lowest:aws-provisioner-v1/servo-docker-untrusted"
              ]
            }
          ]
        },
        {
          "AnyOf": [
            "queue:create-task:aws-provisioner-v1/servo-docker-untrusted",
            {
              "AllOf": [
                "queue:define-task:aws-provisioner-v1/servo-docker-untrusted",
                "queue:task-group-id:taskcluster-github/clwz0ZpQT1adoLyYbpcx2A",
                "queue:schedule-task:taskcluster-github/clwz0ZpQT1adoLyYbpcx2A/clwz0ZpQT1adoLyYbpcx2A"
              ]
            }
          ]
        }
      ]
    }
  ]
}

---

• method: createTask
• errorCode: InsufficientScopes
• statusCode: 403
• time: 2019-11-05T05:01:08.977Z

[bors-servo]

☔ The latest upstream changes (presumably #24676) made this pull request unmergeable. Please resolve the merge conflicts.

[jdm]

Superseded.