Bug 1532284 - Build wrench on Android. r=glandium

Depends on D22377

Differential Revision: https://phabricator.services.mozilla.com/D22378

--HG--
extra : moz-landing-system : lando

gfx/wr/ci-scripts/docker-image/setup.sh

@@ -23,6 +23,7 @@ apt-get install -y \
     libfontconfig1-dev \
     libgl1-mesa-dev \
     libx11-dev \
+    openjdk-8-jdk \
     pkg-config \
     python \
     python-mako \

taskcluster/ci/webrender/kind.yml

@@ -235,3 +235,37 @@ jobs:
                 - 'gfx/wr/**'
                 - 'taskcluster/scripts/misc/tooltool-download.sh'
                 - 'taskcluster/scripts/misc/wrench-windows-tests.sh'
+
+    wrench-android-build:
+        description: Build wrench for Android
+        worker-type: aws-provisioner-v1/gecko-{level}-b-android
+        worker:
+            max-run-time: 5400
+            docker-image: {in-tree: webrender}
+            artifacts:
+                - type: file
+                  name: public/build/wrench-debug.apk
+                  path: /builds/worker/checkouts/gecko/gfx/wr/target/android-artifacts/app/build/outputs/apk/app-debug.apk
+        run:
+            using: run-task
+            command: >-
+                cd $GECKO_PATH &&
+                ./mach artifact toolchain -v $MOZ_TOOLCHAINS &&
+                export PATH=$PATH:$PWD/rustc/bin:$PWD/android-gradle-dependencies/gradle-dist/bin &&
+                export ANDROID_HOME=$PWD/android-sdk-linux &&
+                export NDK_HOME=$PWD/android-ndk &&
+                mv wrench-deps/{vendor,.cargo,cargo-apk} gfx/wr &&
+                cd gfx/wr/wrench &&
+                ../cargo-apk/bin/cargo-apk build --frozen --verbose
+        toolchains:
+            - android-gradle-dependencies
+            - android-ndk-linux
+            - android-sdk-linux
+            - linux64-rust-android
+            - wrench-deps
+        treeherder:
+            platform: android-4-0-armv7-api16/debug
+            symbol: WR(B)
+        when:
+            files-changed:
+                - 'gfx/wr/**'

taskcluster/scripts/misc/wrench-deps-vendoring.sh

@@ -19,6 +19,13 @@ mkdir .cargo
 cargo vendor --relative-path --sync ./Cargo.lock > .cargo/config
 mkdir wrench-deps
 mv vendor .cargo wrench-deps/
+mkdir wrench-deps/cargo-apk
+# Until there's a version of cargo-apk published on crates.io that has
+# https://github.com/tomaka/android-rs-glue/pull/205 and
+# https://github.com/tomaka/android-rs-glue/pull/171 (see also
+# https://github.com/tomaka/android-rs-glue/issues/204), we need to use
+# an unpublished version.
+cargo install --git https://github.com/staktrace/android-rs-glue --rev 6b2be25bd536a453e233cd7aea9d22974db63a49 --root wrench-deps/cargo-apk cargo-apk
 tar caf wrench-deps.tar.bz2 wrench-deps
 
 mkdir -p $UPLOAD_DIR