[Android WebView] Update SW rendering to use SkPicture and fix scrolling cases.

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 182 matching lines @@
   Send(new AwViewHostMsg_UpdateHitTestData(routing_id(), data));
 }
 
 void AwRenderViewExt::OnEnableCapturePictureCallback(bool enable) {
   // TODO(leandrogracia): enable once the feature is available in RenderView.
   //render_view()->SetCapturePictureCallback(enable ?
   //    base::Bind(&AwRenderViewExt::OnPictureUpdate, AsWeakPtr()) :
   //    content::RenderView::CapturePictureCallback());
 }
 
-void AwRenderViewExt::OnPictureUpdate(
-    scoped_refptr<cc::PicturePileImpl> picture) {
+void AwRenderViewExt::OnPictureUpdate(skia::RefPtr<SkPicture> picture) {
   RendererPictureMap::GetInstance()->SetRendererPicture(routing_id(), picture);
   Send(new AwViewHostMsg_PictureUpdated(routing_id()));
 }
 
 }  // namespace android_webview