Remove user gesture tracking

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 111 matching lines @@
     "web/WebLeakDetector.h",
     "web/WebLocalFrame.h",
     "web/WebMemoryUsageInfo.h",
     "web/WebNavigationPolicy.h",
     "web/WebNavigationType.h",
     "web/WebNavigatorContentUtilsClient.h",
     "web/WebNode.h",
     "web/WebPageVisibilityState.h",
     "web/WebRange.h",
     "web/WebRuntimeFeatures.h",
-    "web/WebScopedUserGesture.h",
     "web/WebScriptBindings.h",
     "web/WebScriptController.h",
     "web/WebScriptSource.h",
     "web/WebSettings.h",
     "web/WebSpellCheckClient.h",
     "web/WebTestingSupport.h",
     "web/WebTextAffinity.h",
     "web/WebTextCheckingCompletion.h",
     "web/WebTextCheckingResult.h",
     "web/WebTextCheckingType.h",
     "web/WebTextDecorationType.h",
     "web/WebTextDirection.h",
     "web/WebTextInputInfo.h",
     "web/WebTextInputType.h",
     "web/WebTextRun.h",
     "web/WebTouchAction.h",
     "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",
   ]
 }