chore: Install Chrome for CircleCI

.circleci/config.yml

@@ -2,6 +2,7 @@ version: 2.1
 description: Ruffle - Flash Player emulator written in Rust
 orbs:
   win: circleci/windows@1.0.0
+  browser-tools: circleci/browser-tools@1.0.0
 
 jobs:
   # General testing, linux + web build
@@ -11,6 +12,8 @@ jobs:
     steps:
       # Git checkout
       - checkout
+      - browser-tools/install-chrome
+      - browser-tools/install-chromedriver
 
       # Restore cached assets (cargo registry)
       - restore_cache: