cc : Use dynamically calculated target space transforms

cc/layers/scrollbar_layer_unittest.cc

Index: cc/layers/scrollbar_layer_unittest.cc
diff --git a/cc/layers/scrollbar_layer_unittest.cc b/cc/layers/scrollbar_layer_unittest.cc
index a4752241abfdfe23c819a24985f2ed84eb24268c..bc5f50eae83706754cf9e1e03c6c4582bc59cf54 100644
--- a/cc/layers/scrollbar_layer_unittest.cc
+++ b/cc/layers/scrollbar_layer_unittest.cc
@@ -107,6 +107,8 @@ class ScrollbarLayerTest : public testing::Test {
     layer_tree_settings_.scrollbar_animator = LayerTreeSettings::LINEAR_FADE;
     layer_tree_settings_.scrollbar_fade_delay_ms = 20;
     layer_tree_settings_.scrollbar_fade_duration_ms = 20;
+    layer_tree_settings_.verify_transform_tree_calculations = true;
+    layer_tree_settings_.verify_clip_tree_calculations = true;
 
     scrollbar_layer_id_ = -1;
 
@@ -632,6 +634,8 @@ class ScrollbarLayerSolidColorThumbTest : public testing::Test {
  public:
   ScrollbarLayerSolidColorThumbTest() {
     LayerTreeSettings layer_tree_settings;
+    layer_tree_settings.verify_transform_tree_calculations = true;
+    layer_tree_settings.verify_clip_tree_calculations = true;
     host_impl_.reset(new FakeLayerTreeHostImpl(
         layer_tree_settings, &task_runner_provider_, &shared_bitmap_manager_,
         &task_graph_runner_));