cc: Move data to LayerTree from LayerTreeHost.

cc/trees/layer_tree_host_unittest.cc

Index: cc/trees/layer_tree_host_unittest.cc
diff --git a/cc/trees/layer_tree_host_unittest.cc b/cc/trees/layer_tree_host_unittest.cc
index da1738273dea39816221098f8dc6044697785fcb..be9d015bdfd1c7357fbb5dd8aa75d387746d4ab5 100644
--- a/cc/trees/layer_tree_host_unittest.cc
+++ b/cc/trees/layer_tree_host_unittest.cc
@@ -4308,7 +4308,7 @@ class LayerTreeHostTestElasticOverscroll : public LayerTreeHostTest {
     inner_viewport_scroll_layer->AddChild(content_layer);
 
     layer_tree_host()->SetRootLayer(root_layer_);
-    layer_tree_host()->RegisterViewportLayers(
+    layer_tree_host()->GetLayerTree()->RegisterViewportLayers(
         overscroll_elasticity_layer, page_scale_layer,
         inner_viewport_scroll_layer, nullptr);
     LayerTreeHostTest::SetupTree();
@@ -5624,8 +5624,8 @@ class LayerTreeHostTestCrispUpAfterPinchEnds : public LayerTreeHostTest {
     // pinch.
     pinch->AddChild(layer);
 
-    layer_tree_host()->RegisterViewportLayers(NULL, page_scale_layer, pinch,
-                                              nullptr);
+    layer_tree_host()->GetLayerTree()->RegisterViewportLayers(
+        NULL, page_scale_layer, pinch, nullptr);
     layer_tree_host()->SetPageScaleFactorAndLimits(1.f, 1.f, 4.f);
     layer_tree_host()->SetRootLayer(root_clip);
     LayerTreeHostTest::SetupTree();
@@ -5927,8 +5927,8 @@ class LayerTreeHostTestContinuousDrawWhenCreatingVisibleTiles
     // pinch.
     pinch->AddChild(layer);
 
-    layer_tree_host()->RegisterViewportLayers(NULL, page_scale_layer, pinch,
-                                              nullptr);
+    layer_tree_host()->GetLayerTree()->RegisterViewportLayers(
+        NULL, page_scale_layer, pinch, nullptr);
     layer_tree_host()->SetPageScaleFactorAndLimits(1.f, 1.f, 4.f);
     layer_tree_host()->SetRootLayer(root_clip);
     LayerTreeHostTest::SetupTree();
@@ -6777,7 +6777,7 @@ class LayerTreeTestPageScaleFlags : public LayerTreeTest {
     scoped_refptr<Layer> overscroll_elasticity_layer = nullptr;
     scoped_refptr<Layer> inner_viewport_scroll_layer = nullptr;
     scoped_refptr<Layer> outer_viewport_scroll_layer = nullptr;
-    layer_tree_host()->RegisterViewportLayers(
+    layer_tree_host()->GetLayerTree()->RegisterViewportLayers(
         overscroll_elasticity_layer, page_scale, inner_viewport_scroll_layer,
         outer_viewport_scroll_layer);