Add a passthrough touch event queue.

content/test/BUILD.gn

Index: content/test/BUILD.gn
diff --git a/content/test/BUILD.gn b/content/test/BUILD.gn
index bb8c09fd056b692771376c556912a21b10d868a2..5ba108de0a2efb7a4b4580ac2bd5a49b639075fe 100644
--- a/content/test/BUILD.gn
+++ b/content/test/BUILD.gn
@@ -1196,6 +1196,7 @@ test("content_unittests") {
     "../browser/renderer_host/dwrite_font_proxy_message_filter_win_unittest.cc",
     "../browser/renderer_host/input/gesture_event_queue_unittest.cc",
     "../browser/renderer_host/input/input_router_impl_unittest.cc",
+    "../browser/renderer_host/input/legacy_touch_event_queue_unittest.cc",
     "../browser/renderer_host/input/mock_input_ack_handler.cc",
     "../browser/renderer_host/input/mock_input_ack_handler.h",
     "../browser/renderer_host/input/mock_input_router_client.cc",
@@ -1203,6 +1204,7 @@ test("content_unittests") {
     "../browser/renderer_host/input/motion_event_web_unittest.cc",
     "../browser/renderer_host/input/mouse_wheel_event_queue_unittest.cc",
     "../browser/renderer_host/input/mouse_wheel_rails_filter_unittest_mac.cc",
+    "../browser/renderer_host/input/passthrough_touch_event_queue_unittest.cc",
     "../browser/renderer_host/input/render_widget_host_latency_tracker_unittest.cc",
     "../browser/renderer_host/input/stylus_text_selector_unittest.cc",
     "../browser/renderer_host/input/synthetic_gesture_controller_unittest.cc",
@@ -1210,7 +1212,6 @@ test("content_unittests") {
     "../browser/renderer_host/input/tap_suppression_controller_unittest.cc",
     "../browser/renderer_host/input/touch_action_filter_unittest.cc",
     "../browser/renderer_host/input/touch_emulator_unittest.cc",
-    "../browser/renderer_host/input/touch_event_queue_unittest.cc",
     "../browser/renderer_host/input/web_input_event_builders_android_unittest.cc",
     "../browser/renderer_host/input/web_input_event_builders_mac_unittest.mm",
     "../browser/renderer_host/input/web_input_event_util_unittest.cc",