Plumb smooth scrolling in Chromium compositor

android_webview/renderer/aw_render_view_ext.cc

 // 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.
 
 #include "android_webview/renderer/aw_render_view_ext.h"
 
 #include <string>
 
 #include "android_webview/common/aw_hit_test_data.h"
 #include "android_webview/common/render_view_messages.h"
@@ skipping 149 matching lines @@
 bool AwRenderViewExt::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(AwRenderViewExt, message)
     IPC_MESSAGE_HANDLER(AwViewMsg_DocumentHasImages, OnDocumentHasImagesRequest)
     IPC_MESSAGE_HANDLER(AwViewMsg_DoHitTest, OnDoHitTest)
     IPC_MESSAGE_HANDLER(AwViewMsg_SetTextZoomFactor, OnSetTextZoomFactor)
     IPC_MESSAGE_HANDLER(AwViewMsg_ResetScrollAndScaleState,
                         OnResetScrollAndScaleState)
     IPC_MESSAGE_HANDLER(AwViewMsg_SetInitialPageScale, OnSetInitialPageScale)
     IPC_MESSAGE_HANDLER(AwViewMsg_SetBackgroundColor, OnSetBackgroundColor)
+    IPC_MESSAGE_HANDLER(AwViewMsg_SmoothScroll, OnSmoothScroll)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 void AwRenderViewExt::OnDocumentHasImagesRequest(int id) {
   bool hasImages = false;
   if (render_view()) {
     blink::WebView* webview = render_view()->GetWebView();
     if (webview) {
@@ skipping 133 matching lines @@
   render_view()->GetWebView()->setInitialPageScaleOverride(
       page_scale_factor);
 }
 
 void AwRenderViewExt::OnSetBackgroundColor(SkColor c) {
   if (!render_view() || !render_view()->GetWebView())
     return;
   render_view()->GetWebView()->setBaseBackgroundColor(c);
 }
 
+void AwRenderViewExt::OnSmoothScroll(int target_x,
+                                     int target_y,
+                                     long duration_ms) {
+  if (!render_view() || !render_view()->GetWebView())
+    return;
+
+  render_view()->GetWebView()->smoothScroll(target_x, target_y, duration_ms);
+}
+
 }  // namespace android_webview