cc: Split out calcDrawEtc from drawLayers

cc/delegated_renderer_layer_impl_unittest.cc

Index: cc/delegated_renderer_layer_impl_unittest.cc
diff --git a/cc/delegated_renderer_layer_impl_unittest.cc b/cc/delegated_renderer_layer_impl_unittest.cc
index 5b295271a327ea3ceb012cfa7747b8d08ca65dfc..6f3625543c06e88a2fa8e0593c4190b4e89f607d 100644
--- a/cc/delegated_renderer_layer_impl_unittest.cc
+++ b/cc/delegated_renderer_layer_impl_unittest.cc
@@ -112,23 +112,27 @@ public:
 
         m_hostImpl->setViewportSize(gfx::Size(100, 100), gfx::Size(100, 100));
         rootLayer->setBounds(gfx::Size(100, 100));
+        rootLayer->setLayerTreeHostImpl(m_hostImpl.get());
 
         layerBefore->setPosition(gfx::Point(20, 20));
         layerBefore->setBounds(gfx::Size(14, 14));
         layerBefore->setContentBounds(gfx::Size(14, 14));
         layerBefore->setDrawsContent(true);
         layerBefore->setForceRenderSurface(true);
+        layerBefore->setLayerTreeHostImpl(m_hostImpl.get());
 
         layerAfter->setPosition(gfx::Point(5, 5));
         layerAfter->setBounds(gfx::Size(15, 15));
         layerAfter->setContentBounds(gfx::Size(15, 15));
         layerAfter->setDrawsContent(true);
         layerAfter->setForceRenderSurface(true);
+        layerAfter->setLayerTreeHostImpl(m_hostImpl.get());
 
         delegatedRendererLayer->setPosition(gfx::Point(3, 3));
         delegatedRendererLayer->setBounds(gfx::Size(10, 10));
         delegatedRendererLayer->setContentBounds(gfx::Size(10, 10));
         delegatedRendererLayer->setDrawsContent(true);
+        delegatedRendererLayer->setLayerTreeHostImpl(m_hostImpl.get());
         gfx::Transform transform;
         transform.Translate(1, 1);
         delegatedRendererLayer->setTransform(transform);
@@ -430,11 +434,13 @@ public:
 
         m_hostImpl->setViewportSize(gfx::Size(100, 100), gfx::Size(100, 100));
         rootLayer->setBounds(gfx::Size(100, 100));
+        rootLayer->setLayerTreeHostImpl(m_hostImpl.get());
 
         delegatedRendererLayer->setPosition(gfx::Point(20, 20));
         delegatedRendererLayer->setBounds(gfx::Size(20, 20));
         delegatedRendererLayer->setContentBounds(gfx::Size(20, 20));
         delegatedRendererLayer->setDrawsContent(true);
+        delegatedRendererLayer->setLayerTreeHostImpl(m_hostImpl.get());
         gfx::Transform transform;
         transform.Translate(10, 10);
         delegatedRendererLayer->setTransform(transform);