Import wpt@767dc2a4f049c761bd146d61de2ea860a895a624

third_party/WebKit/LayoutTests/external/wpt/ci_stability.sh

Index: third_party/WebKit/LayoutTests/external/wpt/ci_stability.sh
diff --git a/third_party/WebKit/LayoutTests/external/wpt/ci_stability.sh b/third_party/WebKit/LayoutTests/external/wpt/ci_stability.sh
index 725c0f076ca06603b82cb87533f13607d5d9129c..eca9debeb3ec93312bbc4cf84dfceb4a736e5f23 100644
--- a/third_party/WebKit/LayoutTests/external/wpt/ci_stability.sh
+++ b/third_party/WebKit/LayoutTests/external/wpt/ci_stability.sh
@@ -25,6 +25,15 @@ install_chrome() {
     deb_archive=google-chrome-${channel}_current_amd64.deb
     wget https://dl.google.com/linux/direct/$deb_archive
 
+    # If the environment provides an installation of Google Chrome, the
+    # existing binary may take precedence over the one introduced in this
+    # script. Remove any previously-existing "alternatives" prior to
+    # installation in order to ensure that the new binary is installed as
+    # intended.
+    if sudo update-alternatives --list google-chrome; then
+        sudo update-alternatives --remove-all google-chrome
+    fi
+
     # Installation will fail in cases where the package has unmet dependencies.
     # When this occurs, attempt to use the system package manager to fetch the
     # required packages and retry.