browser_test that creates filesystem resources in extension origin

content/test/BUILD.gn

Index: content/test/BUILD.gn
diff --git a/content/test/BUILD.gn b/content/test/BUILD.gn
index 4fe504fa6682bab09b9944becea5df00182b6509..dabbb3535ceee4b8740c6e08c538dd4226c084d9 100644
--- a/content/test/BUILD.gn
+++ b/content/test/BUILD.gn
@@ -94,6 +94,8 @@ static_library("test_support") {
     "../public/test/test_file_system_context.h",
     "../public/test/test_file_system_options.cc",
     "../public/test/test_file_system_options.h",
+    "../public/test/test_fileapi_operation_waiter.cc",
+    "../public/test/test_fileapi_operation_waiter.h",
     "../public/test/test_frame_navigation_observer.cc",
     "../public/test/test_frame_navigation_observer.h",
     "../public/test/test_launcher.cc",