Update web-platform-tests to revision 81962ac8802223d038b188b6f9cb88a0a9c5beee

tests/wpt/web-platform-tests/tools/docker/Dockerfile

@@ -60,17 +60,13 @@ USER test
 
 WORKDIR /home/test
 
-COPY .bashrc /home/test/.bashrc
-
-COPY start.sh /home/test/start.sh
-
 # Remove information on how to use sudo on login
 RUN sudo echo ""
 
-RUN git clone --depth=1 https://github.com/w3c/web-platform-tests.git
-
-RUN mkdir -p /home/test/.fonts && \
-    cp web-platform-tests/fonts/Ahem.ttf ~/.fonts && \
-    fc-cache -f -v
-
 RUN mkdir -p /home/test/artifacts
+
+WORKDIR /home/test/
+
+COPY .bashrc /home/test/.bashrc
+
+COPY start.sh /home/test/start.sh

tests/wpt/web-platform-tests/tools/docker/start.sh

@@ -1,14 +1,34 @@
 #!/bin/bash
+set -ex
 
+REMOTE=${1:-https://github.com/w3c/web-platform-tests}
+BRANCH=${2:-master}
+REV=${3:-FETCH_HEAD}
+BROWSER=${4:-all}
+
+cd ~
+
+# Initially we just fetch 50 commits in order to save several minutes of fetching
+git clone ${REMOTE} --single-branch --branch ${BRANCH} --no-checkout -q --depth=50 web-platform-tests
 cd web-platform-tests
-git pull --depth=50
+if [[ ! `git rev-parse --verify -q ${REV}` ]];
+then
+    # But if for some reason the commit under test isn't in that range, we give in and
+    # fetch everything
+    git fetch -q --unshallow ${REMOTE}
+    git rev-parse --verify ${REV}
+fi
+git checkout -b build ${REV}
 
 sudo sh -c './wpt make-hosts-file >> /etc/hosts'
 
-# Install Chome dev
-deb_archive=google-chrome-unstable_current_amd64.deb
-wget https://dl.google.com/linux/direct/$deb_archive
+if [[ $BROWSER == "chrome"* ]] || [[ "$BROWSER" == all ]]
+then
+    # Install Chrome dev
+    deb_archive=google-chrome-unstable_current_amd64.deb
+    wget https://dl.google.com/linux/direct/$deb_archive
 
-sudo gdebi -n $deb_archive
+    sudo gdebi -n $deb_archive
+fi
 
 sudo Xvfb $DISPLAY -screen 0 ${SCREEN_WIDTH}x${SCREEN_HEIGHT}x${SCREEN_DEPTH} &