Refactors code for WebGestureCurve to ui/events/gestures/blink

ui/events/gestures/blink/BUILD.gn

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 source_set("blink") {
   sources = [
-    "blink_event_util.cc",
-    "blink_event_util.h",
+    "web_gesture_curve_impl.cc",
+    "web_gesture_curve_impl.h",
   ]
 
   deps = [
+    "//base",
     "//third_party/WebKit/public:blink_headers",
     "//ui/events",
     "//ui/events:gesture_detection",
     "//ui/gfx/geometry",
   ]
 }