Note scrollbar layer properties changed when position changes.

cc/layers/scrollbar_layer.cc

 // Copyright 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 "cc/layers/scrollbar_layer.h"
 
 #include "base/auto_reset.h"
 #include "base/basictypes.h"
 #include "base/debug/trace_event.h"
 #include "cc/layers/scrollbar_layer_impl.h"
@@ skipping 92 matching lines @@
 void ScrollbarLayer::PushPropertiesTo(LayerImpl* layer) {
   ContentsScalingLayer::PushPropertiesTo(layer);
 
   ScrollbarLayerImpl* scrollbar_layer = static_cast<ScrollbarLayerImpl*>(layer);
 
   if (layer_tree_host() &&
       layer_tree_host()->settings().solid_color_scrollbars) {
     int thickness_override =
         layer_tree_host()->settings().solid_color_scrollbar_thickness_dip;
     if (thickness_override != -1) {
-      scrollbar_layer->set_thumb_thickness(thickness_override);
+      scrollbar_layer->SetThumbThickness(thickness_override);
     } else {
       if (Orientation() == HORIZONTAL)
-        scrollbar_layer->set_thumb_thickness(bounds().height());
+        scrollbar_layer->SetThumbThickness(bounds().height());
       else
-        scrollbar_layer->set_thumb_thickness(bounds().width());
+        scrollbar_layer->SetThumbThickness(bounds().width());
     }
   } else {
-    scrollbar_layer->set_thumb_thickness(thumb_thickness_);
+    scrollbar_layer->SetThumbThickness(thumb_thickness_);
   }
-  scrollbar_layer->set_thumb_length(thumb_length_);
+  scrollbar_layer->SetThumbLength(thumb_length_);
   if (Orientation() == HORIZONTAL) {
-    scrollbar_layer->set_track_start(track_rect_.x());
-    scrollbar_layer->set_track_length(track_rect_.width());
+    scrollbar_layer->SetTrackStart(track_rect_.x());
+    scrollbar_layer->SetTrackLength(track_rect_.width());
   } else {
-    scrollbar_layer->set_track_start(track_rect_.y());
-    scrollbar_layer->set_track_length(track_rect_.height());
+    scrollbar_layer->SetTrackStart(track_rect_.y());
+    scrollbar_layer->SetTrackLength(track_rect_.height());
   }
 
   if (track_resource_.get())
     scrollbar_layer->set_track_ui_resource_id(track_resource_->id());
   if (thumb_resource_.get())
     scrollbar_layer->set_thumb_ui_resource_id(thumb_resource_->id());
 
   scrollbar_layer->set_is_overlay_scrollbar(scrollbar_->IsOverlay());
 
   // ScrollbarLayer must push properties every frame. crbug.com/259095
@@ skipping 98 matching lines @@
   paint.setXfermodeMode(SkXfermode::kClear_Mode);
   skcanvas.drawRect(layer_skrect, paint);
   skcanvas.clipRect(layer_skrect);
 
   scrollbar_->PaintPart(&skcanvas, part, layer_rect);
 
   return bitmap;
 }
 
 }  // namespace cc