Plumb smooth scrolling in Chromium compositor

content/renderer/input/input_handler_wrapper.cc

 // Copyright 2013 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.
 
 #include "content/renderer/input/input_handler_wrapper.h"
 
 #include "base/location.h"
 #include "content/renderer/input/input_event_filter.h"
 #include "content/renderer/input/input_handler_manager.h"
 #include "third_party/WebKit/public/platform/Platform.h"
@@ skipping 29 matching lines @@
 }
 
 blink::WebGestureCurve* InputHandlerWrapper::CreateFlingAnimationCurve(
     blink::WebGestureDevice deviceSource,
     const blink::WebFloatPoint& velocity,
     const blink::WebSize& cumulative_scroll) {
   return blink::Platform::current()->createFlingAnimationCurve(
       deviceSource, velocity, cumulative_scroll);
 }
 
+blink::WebGestureCurve* InputHandlerWrapper::CreateSmoothScrollAnimationCurve(
+    blink::WebGestureDevice deviceSource,
+    float start_x,
+    float start_y,
+    float dx,
+    float dy,
+    long duration) {
+  return blink::Platform::current()->createSmoothScrollAnimationCurve(
+      deviceSource, start_x, start_y, dx, dy, duration);
+}
+
 void InputHandlerWrapper::DidOverscroll(const DidOverscrollParams& params) {
   input_handler_manager_->DidOverscroll(routing_id_, params);
 }
 
 void InputHandlerWrapper::DidStopFlinging() {
   input_handler_manager_->DidStopFlinging(routing_id_);
 }
 
 void InputHandlerWrapper::DidAnimateForInput() {
   input_handler_manager_->DidAnimateForInput();
 }
 
 }  // namespace content