Force use of and cache render surface.

cc/trees/layer_tree_host_unittest_occlusion.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/trees/layer_tree_host.h"
 
 #include "cc/layers/layer.h"
 #include "cc/layers/picture_layer.h"
 #include "cc/test/fake_content_layer_client.h"
 #include "cc/test/layer_test_common.h"
@@ skipping 70 matching lines @@
  public:
   void SetupTree() override {
     scoped_refptr<Layer> root = Layer::Create();
     root->SetBounds(gfx::Size(100, 100));
     root->SetIsDrawable(true);
 
     child_ = Layer::Create();
     child_->SetBounds(gfx::Size(1, 1));
     child_->SetPosition(gfx::PointF(10.f, 5.5f));
     child_->SetIsDrawable(true);
-    child_->SetForceRenderSurfaceForTesting(true);
+    child_->SetForceRenderSurface(true);
     root->AddChild(child_);
 
     scoped_refptr<Layer> child2 = Layer::Create();
     child2->SetBounds(gfx::Size(10, 12));
     child2->SetPosition(gfx::PointF(13.f, 8.5f));
     child2->SetContentsOpaque(true);
     child2->SetIsDrawable(true);
     root->AddChild(child2);
 
     layer_tree_host()->SetRootLayer(root);
@@ skipping 161 matching lines @@
  private:
   FakeContentLayerClient client_;
   scoped_refptr<Layer> child_;
 };
 
 SINGLE_AND_MULTI_THREAD_TEST_F(
     LayerTreeHostOcclusionTestDrawPropertiesOnScaledMask);
 
 }  // namespace
 }  // namespace cc