Add android-mac build job to taskcluster.

etc/ci/buildbot_steps.yml

@@ -124,16 +124,6 @@ linux-nightly:
   - rm -rf ./python/_virtualenv
   - ./etc/ci/clean_build_artifacts.sh
 
-android-mac:
- commands:
-  - ./mach clean-nightlies --keep 3 --force
-  - ./mach clean-cargo-cache --keep 3 --force
-  - ./mach bootstrap-android --accept-all-licences --build
-  - ./mach build --android --dev
-  - ./mach package --android --dev
-  - bash ./etc/ci/lockfile_changed.sh
-  - ./etc/ci/clean_build_artifacts.sh
-
 magicleap:
  env:
   MAGICLEAP_SDK: /Users/servo/magicleap/v0.17.0
@@ -225,6 +215,7 @@ arm64:
 linux-dev: []
 mac-dev-unit: []
 windows-msvc-dev: []
+android-mac: []
 android: []
 android-x86: []
 mac-rel-wpt1: []

etc/taskcluster/decision_task.py

@@ -18,8 +18,7 @@ def main(task_for):
 
     if task_for == "github-push":
         # FIXME https://github.com/servo/servo/issues/22325 implement these:
-        magicleap_dev = linux_arm32_dev = linux_arm64_dev = \
-            android_arm32_dev_from_macos = lambda: None
+        magicleap_dev = linux_arm32_dev = linux_arm64_dev = lambda: None
 
         # FIXME https://github.com/servo/servo/issues/22187
         # In-emulator testing is disabled for now. (Instead we only compile.)
@@ -36,6 +35,7 @@ def main(task_for):
             macos_unit,
             magicleap_dev,
             android_arm32_dev,
+            android_arm32_dev_from_macos,
             android_arm32_release,
             android_x86_wpt,
             linux_arm32_dev,
@@ -251,6 +251,18 @@ def with_rust_nightly():
     )
 
 
+def android_arm32_dev_from_macos():
+    return (
+        macos_build_task("Dev build (macOS)")
+        .with_treeherder("Android ARMv7")
+        .with_script("""
+            ./mach bootstrap-android --accept-all-licences --build
+            ./mach build --android --dev
+        """)
+        .find_or_create("android_arm32_dev.macos." + CONFIG.git_sha)
+    )
+
+
 def android_arm32_dev():
     return (
         android_build_task("Dev build")