Plumb smooth scrolling in Chromium compositor

android_webview/browser/renderer_host/aw_render_view_host_ext.h

 // Copyright (c) 2012 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.
 
 #ifndef ANDROID_WEBVIEW_BROWSER_RENDER_HOST_RENDER_VIEW_HOST_EXT_H_
 #define ANDROID_WEBVIEW_BROWSER_RENDER_HOST_RENDER_VIEW_HOST_EXT_H_
 
 #include "content/public/browser/web_contents_observer.h"
 
 #include "android_webview/common/aw_hit_test_data.h"
@@ skipping 62 matching lines @@
   void SetTextZoomFactor(float factor);
 
   void ResetScrollAndScaleState();
 
   // Sets the initial page scale. This overrides initial scale set by
   // the meta viewport tag.
   void SetInitialPageScale(double page_scale_factor);
   void SetBackgroundColor(SkColor c);
   void SetJsOnlineProperty(bool network_up);
 
+  void SmoothScroll(int target_x, int target_y, long duration_ms);
+
  private:
   // content::WebContentsObserver implementation.
   void RenderViewCreated(content::RenderViewHost* view_host) override;
   void RenderProcessGone(base::TerminationStatus status) override;
   void DidNavigateAnyFrame(content::RenderFrameHost* render_frame_host,
                            const content::LoadCommittedDetails& details,
                            const content::FrameNavigateParams& params) override;
   bool OnMessageReceived(const IPC::Message& message) override;
 
   void OnDocumentHasImagesResponse(int msg_id, bool has_images);
@@ skipping 15 matching lines @@
   AwHitTestData last_hit_test_data_;
 
   bool has_new_hit_test_data_;
 
   DISALLOW_COPY_AND_ASSIGN(AwRenderViewHostExt);
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_RENDER_HOST_RENDER_VIEW_HOST_EXT_H_