Convert ui::Event directly to blink::WebInputEvent.

mojo/converters/blink/BUILD.gn

Index: mojo/converters/blink/BUILD.gn
diff --git a/mojo/converters/blink/BUILD.gn b/mojo/converters/blink/BUILD.gn
index 7f6b412e8b83aef594bb3f151ff82668619921fd..bc32145575a8ed4026219c345c1c9f2aea4f9e91 100644
--- a/mojo/converters/blink/BUILD.gn
+++ b/mojo/converters/blink/BUILD.gn
@@ -2,6 +2,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//testing/test.gni")
+
 component("blink") {
   output_name = "mojo_blink_lib"
 
@@ -15,8 +17,26 @@ component("blink") {
 
   deps = [
     "//base",
-    "//components/mus/public/interfaces",
     "//mojo/public/c/system:for_component",
+    "//mojo/public/cpp/bindings:bindings",
+    "//third_party/WebKit/public:blink",
+    "//ui/events",
+    "//ui/events:dom_keycode_converter",
+  ]
+}
+
+test("blink_converters_unittests") {
+  sources = [
+    "blink_input_events_type_converters_unittest.cc",
+  ]
+  deps = [
+    ":blink",
+    "//base:message_loop_tests",
+    "//base/test:run_all_unittests",
+    "//base/test:test_support",
+    "//mojo/edk/test:test_support",
+    "//mojo/public/cpp/bindings:bindings",
+    "//testing/gtest",
     "//third_party/WebKit/public:blink",
     "//ui/events",
   ]