[Azure Pipelines] Run all tests on Edge on Windows 10

.azure-pipelines.yml

@@ -157,6 +157,34 @@ jobs:
     condition: succeededOrFailed()
   - template: tools/ci/azure/cleanup_win10.yml
 
+- job: all_edge
+  displayName: 'all tests (Edge)'
+  # This job is only triggered manually until it has been shown to be robust.
+  condition: eq(variables['Build.Reason'], 'Manual')
+  # There are 5 agents in the pool, but use more jobs so that each takes <1h.
+  strategy:
+    parallel: 20
+  timeoutInMinutes: 360
+  pool:
+    name: 'Hosted Windows Client'
+  steps:
+  - template: tools/ci/azure/system_info.yml
+  - template: tools/ci/azure/checkout.yml
+  - template: tools/ci/azure/install_python.yml
+  - template: tools/ci/azure/pip_install.yml
+    parameters:
+      packages: virtualenv
+  - template: tools/ci/azure/install_certs.yml
+  - template: tools/ci/azure/update_hosts.yml
+  - template: tools/ci/azure/update_manifest.yml
+  - script: python ./wpt run --no-manifest-update --no-restart-on-unexpected --no-fail-on-unexpected --install-fonts --test-types reftest testharness --this-chunk $(System.JobPositionInPhase) --total-chunks $(System.TotalJobsInPhase) --chunk-type hash --log-wptreport $(Build.ArtifactStagingDirectory)/wpt_report_$(System.JobPositionInPhase).json edge_webdriver
+    displayName: 'Run tests'
+  - task: PublishBuildArtifacts@1
+    displayName: 'Publish results'
+    inputs:
+      artifactName: 'results'
+  - template: tools/ci/azure/cleanup_win10.yml
+
 - job: all_macOS
   displayName: 'all tests (Safari Technology Preview)'
   condition: eq(variables['Build.Reason'], 'Schedule')