Scrollbar Layer revert

cc/test/fake_scrollbar_layer.cc

Index: cc/test/fake_scrollbar_layer.cc
===================================================================
--- cc/test/fake_scrollbar_layer.cc	(revision 215030)
+++ cc/test/fake_scrollbar_layer.cc	(working copy)
@@ -18,7 +18,9 @@
               new FakeScrollbar(paint_during_update, has_thumb, false)).Pass(),
           scrolling_layer_id),
       update_count_(0),
-      push_properties_count_(0) {
+      push_properties_count_(0),
+      last_update_full_upload_size_(0),
+      last_update_partial_upload_size_(0) {
   SetAnchorPoint(gfx::PointF(0.f, 0.f));
   SetBounds(gfx::Size(1, 1));
   SetIsDrawable(true);
@@ -28,8 +30,12 @@
 
 bool FakeScrollbarLayer::Update(ResourceUpdateQueue* queue,
                                 const OcclusionTracker* occlusion) {
+  size_t full = queue->FullUploadSize();
+  size_t partial = queue->PartialUploadSize();
   bool updated = ScrollbarLayer::Update(queue, occlusion);
-  ++update_count_;
+  update_count_++;
+  last_update_full_upload_size_ = queue->FullUploadSize() - full;
+  last_update_partial_upload_size_ = queue->PartialUploadSize() - partial;
   return updated;
 }