Fix background stubbing

spec/support/browsers/chrome.rb

@@ -124,6 +124,8 @@ end
 register_chrome "en", name: :chrome_billy do |options|
   options.add_argument("proxy-server=#{Billy.proxy.host}:#{Billy.proxy.port}")
   options.add_argument("proxy-bypass-list=127.0.0.1;localhost;#{Capybara.server_host}")
+  # Reduce background Google service traffic that can crash puffing-billy's parser.
+  options.add_argument("--disable-background-networking")
 
   options.accept_insecure_certs = true
 end

spec/support/shared/with_direct_uploads.rb

@@ -84,6 +84,8 @@ class WithDirectUploads
   end
 
   def stub_frontend(redirect: false)
+    stub_chrome_background_requests
+
     proxy.stub("https://" + OpenProject::Configuration.remote_storage_upload_host + ":443/", method: "options").and_return(
       headers: {
         "Access-Control-Allow-Methods" => "POST",
@@ -119,6 +121,21 @@ class WithDirectUploads
       end)
   end
 
+  def stub_chrome_background_requests
+    [
+      %r{\Ahttp://clients2\.google\.com:80/},
+      %r{\Ahttps://accounts\.google\.com:443/},
+      %r{\Ahttps://www\.google\.com:443/},
+      %r{\Ahttps://content-autofill\.googleapis\.com:443/},
+      %r{\Ahttps://optimizationguide-pa\.googleapis\.com:443/},
+      %r{\Ahttps://android\.clients\.google\.com:443/}
+    ].each do |url_pattern|
+      %w[get post].each do |method|
+        proxy.stub(url_pattern, method:).and_return(code: 204, headers: {})
+      end
+    end
+  end
+
   def append_key_query_param(redirect_url, key)
     delimiter = redirect_url.include?("?") ? "&" : "?"
     "#{redirect_url}#{delimiter}key=#{CGI.escape(key)}"