Move |ScopedWebInputEvent| and |WebInputEventTraits| from |content::| to "ui/events/blink"

ui/events/blink/BUILD.gn

Index: ui/events/blink/BUILD.gn
diff --git a/ui/events/blink/BUILD.gn b/ui/events/blink/BUILD.gn
index 37dbd989f96e219e7839eb3d85babd02e354fe73..2de37f8138c981bea621b9e1d7aa86dc22a8dc98 100644
--- a/ui/events/blink/BUILD.gn
+++ b/ui/events/blink/BUILD.gn
@@ -11,15 +11,19 @@ source_set("blink") {
     "input_handler_proxy_client.h",
     "input_scroll_elasticity_controller.cc",
     "input_scroll_elasticity_controller.h",
+    "scoped_web_input_event.cc",
+    "scoped_web_input_event.h",
     "synchronous_input_handler_proxy.h",
+    "web_input_event_traits.cc",
+    "web_input_event_traits.h",
   ]
 
   deps = [
     "//cc:cc",
     "//third_party/WebKit/public:blink_headers",
     "//ui/events",
+    "//ui/events:events_base",
     "//ui/events:gesture_detection",
     "//ui/gfx/geometry",
-    "//ui/events:events_base",
   ]
 }