add webgl platform to CI test

.yamato/upm-ci-webrtc-packages.yml

@@ -354,6 +354,21 @@ test_{{ package.name }}_{{ editor.version }}_android_{{ target.name }}:
 {% endfor %}
 {% endfor %}
 
+test_{{ package.name }}_{{ editor.version }}_webgl_win:
+  name: Test {{ package.packagename }} with {{ editor.version }} on WebGL {{ target.name }}
+  agent:
+    type: Unity::VM::GPU
+    image: package-ci/win10:stable
+    flavor: b1.large
+  skip_checkout: true
+  dependencies:
+    - .yamato/upm-ci-{{ package.name }}-packages.yml#pack_{{ package.name }}
+  commands:
+      - pip install unity-downloader-cli --index-url https://artifactory.prd.it.unity3d.com/artifactory/api/pypi/pypi/simple
+      - unity-downloader-cli -u {{ editor.version }} -c WebGL -c Editor -c StandaloneSupport-IL2CPP --fast -w
+      - curl -s https://artifactory.prd.it.unity3d.com/artifactory/unity-tools/utr-standalone/utr.bat --output utr.bat
+      - ./utr --suite=playmode --platform=WebGL --editor-location=.Editor --testproject=WebRTC~ --artifacts_path=build/test-results --timeout=5400
+
 {% for target in test_targets %}
 {% for editor in editors %}
 {% for param in target.test_params %}