Remove a number of unused features from WebViewImpl

sky/engine/public/BUILD.gn

 # Copyright 2014 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.
 
 import("//tools/grit/grit_rule.gni")
 
 group("test_support") {
   deps = [
     "//sky/engine/web:test_support",
   ]
@@ skipping 31 matching lines @@
     "platform/WebFilterAnimationCurve.h",
     "platform/WebFilterKeyframe.h",
     "platform/WebFilterOperations.h",
     "platform/WebFlingAnimator.h",
     "platform/WebFloatAnimationCurve.h",
     "platform/WebFloatKeyframe.h",
     "platform/WebFloatPoint.h",
     "platform/WebFloatPoint3D.h",
     "platform/WebFloatRect.h",
     "platform/WebFloatSize.h",
-    "platform/WebGestureCurve.h",
-    "platform/WebGestureCurveTarget.h",
     "platform/WebGestureDevice.h",
     "platform/WebGraphicsContext3D.h",
     "platform/WebGraphicsContext3DProvider.h",
     "platform/WebHTTPBody.h",
     "platform/WebHTTPHeaderVisitor.h",
     "platform/WebHTTPLoadInfo.h",
     "platform/WebImage.h",
     "platform/WebImageLayer.h",
     "platform/WebInputEvent.h",
     "platform/WebLayer.h",
@@ skipping 87 matching lines @@
     "web/WebURLLoaderOptions.h",
     "web/WebUserGestureIndicator.h",
     "web/WebUserGestureToken.h",
     "web/WebView.h",
     "web/WebViewClient.h",
     "web/WebWidget.h",
     "web/WebWidgetClient.h",
     "web/linux/WebFontRendering.h",
   ]
 }