Revert of cc: Move data to LayerTree from LayerTreeHost.

cc/trees/layer_tree_host_unittest_occlusion.cc

Index: cc/trees/layer_tree_host_unittest_occlusion.cc
diff --git a/cc/trees/layer_tree_host_unittest_occlusion.cc b/cc/trees/layer_tree_host_unittest_occlusion.cc
index a85bca21a73163d2dd48cb5afff892ac7f5a7aee..fea056ef111a5f8024dd7dcdade390a2414c687e 100644
--- a/cc/trees/layer_tree_host_unittest_occlusion.cc
+++ b/cc/trees/layer_tree_host_unittest_occlusion.cc
@@ -41,7 +41,7 @@
     child_->SetIsDrawable(true);
     root->AddChild(child_);
 
-    layer_tree()->SetRootLayer(root);
+    layer_tree_host()->SetRootLayer(root);
     LayerTreeTest::SetupTree();
   }
 
@@ -97,7 +97,7 @@
     child2->SetIsDrawable(true);
     root->AddChild(child2);
 
-    layer_tree()->SetRootLayer(root);
+    layer_tree_host()->SetRootLayer(root);
     LayerTreeTest::SetupTree();
   }
 
@@ -163,7 +163,7 @@
     child2->SetIsDrawable(true);
     root->AddChild(child2);
 
-    layer_tree()->SetRootLayer(root);
+    layer_tree_host()->SetRootLayer(root);
     LayerTreeTest::SetupTree();
     client_.set_bounds(root->bounds());
   }
@@ -236,7 +236,7 @@
     child2->SetIsDrawable(true);
     root->AddChild(child2);
 
-    layer_tree()->SetRootLayer(root);
+    layer_tree_host()->SetRootLayer(root);
     LayerTreeTest::SetupTree();
     client_.set_bounds(root->bounds());
   }
@@ -304,7 +304,7 @@
     child2->SetIsDrawable(true);
     root->AddChild(child2);
 
-    layer_tree()->SetRootLayer(root);
+    layer_tree_host()->SetRootLayer(root);
     LayerTreeTest::SetupTree();
     client_.set_bounds(root->bounds());
   }