Delete LayerImpl::GetRenderSurface.

cc/test/layer_test_common.h

Index: cc/test/layer_test_common.h
diff --git a/cc/test/layer_test_common.h b/cc/test/layer_test_common.h
index e1cf60f2da4dafe7abb50bfcfb1bcdff1a1de2e4..67e9d4bbec79f14dd80ffc429a14a05781177259 100644
--- a/cc/test/layer_test_common.h
+++ b/cc/test/layer_test_common.h
@@ -15,6 +15,7 @@
 #include "cc/test/fake_layer_tree_host.h"
 #include "cc/test/fake_layer_tree_host_client.h"
 #include "cc/test/test_task_graph_runner.h"
+#include "cc/trees/effect_node.h"
 #include "cc/trees/layer_tree_host_impl.h"
 
 #define EXPECT_SET_NEEDS_COMMIT(expect, code_to_test)                 \
@@ -40,6 +41,9 @@ class QuadList;
 class RenderSurfaceImpl;
 class ResourceProvider;
 
+RenderSurfaceImpl* GetRenderSurface(LayerImpl* layer_impl);
+const RenderSurfaceImpl* GetRenderSurface(const LayerImpl* layer_impl);
+
 class LayerTestCommon {
  public:
   static const char* quad_string;