Remove GraphicsLayer::didScroll and directly call ScrollableArea::didScroll

ui/views/controls/scroll_view.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 "ui/views/controls/scroll_view.h"
 
 #include "base/feature_list.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "ui/events/event.h"
@@ skipping 681 matching lines @@
 }
 
 void ScrollView::ScrollToOffset(const gfx::ScrollOffset& offset) {
   if (ScrollsWithLayers()) {
     contents_->layer()->SetScrollOffset(offset);
 
     // TODO(tapted): Remove this call to OnLayerScrolled(). It's unnecessary,
     // but will only be invoked (asynchronously) when a Compositor is present
     // and commits a frame, which isn't true in some tests.
     // See http://crbug.com/637521.
-    OnLayerScrolled();
+    OnLayerScrolled(offset);
   } else {
     contents_->SetPosition(gfx::Point(-offset.x(), -offset.y()));
     ScrollHeader();
   }
 }
 
 bool ScrollView::ScrollsWithLayers() const {
   // Just check for the presence of a layer since it's cheaper than querying the
   // Feature flag each time.
   return contents_viewport_->layer() != nullptr;
 }
 
 void ScrollView::EnableViewPortLayer() {
   background_color_ = SK_ColorWHITE;
   contents_viewport_->set_background(
       Background::CreateSolidBackground(background_color_));
   contents_viewport_->SetPaintToLayer();
   contents_viewport_->layer()->SetMasksToBounds(true);
 }
 
-void ScrollView::OnLayerScrolled() {
+void ScrollView::OnLayerScrolled(const gfx::ScrollOffset&) {
   UpdateScrollBarPositions();
   ScrollHeader();
 }
 
 void ScrollView::ScrollHeader() {
   if (!header_)
     return;
 
   int x_offset = CurrentOffset().x();
   if (header_->x() != -x_offset) {
@@ skipping 69 matching lines @@
 
 VariableRowHeightScrollHelper::RowInfo
     FixedRowHeightScrollHelper::GetRowInfo(int y) {
   if (y < top_margin_)
     return RowInfo(0, top_margin_);
   return RowInfo((y - top_margin_) / row_height_ * row_height_ + top_margin_,
                  row_height_);
 }
 
 }  // namespace views