cc: Get rid of non-delegated rendering in most cc unit tests.

cc/trees/layer_tree_host_common_unittest.cc

Index: cc/trees/layer_tree_host_common_unittest.cc
diff --git a/cc/trees/layer_tree_host_common_unittest.cc b/cc/trees/layer_tree_host_common_unittest.cc
index 6e6ecb5733d18a98091b6ed3e9980bad20d2041f..ad8f75dedb9cd320f1b9d253545e74ca90fa66ba 100644
--- a/cc/trees/layer_tree_host_common_unittest.cc
+++ b/cc/trees/layer_tree_host_common_unittest.cc
@@ -3707,7 +3707,8 @@ TEST_F(LayerTreeHostCommonTest, OcclusionBySiblingOfTarget) {
   FakeImplTaskRunnerProvider task_runner_provider;
   TestSharedBitmapManager shared_bitmap_manager;
   TestTaskGraphRunner task_graph_runner;
-  std::unique_ptr<OutputSurface> output_surface = FakeOutputSurface::Create3d();
+  std::unique_ptr<OutputSurface> output_surface =
+      FakeOutputSurface::CreateDelegating3d();
   FakeLayerTreeHostImpl host_impl(&task_runner_provider, &shared_bitmap_manager,
                                   &task_graph_runner);
 
@@ -3795,7 +3796,8 @@ TEST_F(LayerTreeHostCommonTest,
   FakeImplTaskRunnerProvider task_runner_provider;
   TestSharedBitmapManager shared_bitmap_manager;
   TestTaskGraphRunner task_graph_runner;
-  std::unique_ptr<OutputSurface> output_surface = FakeOutputSurface::Create3d();
+  std::unique_ptr<OutputSurface> output_surface =
+      FakeOutputSurface::CreateDelegating3d();
   FakeLayerTreeHostImpl host_impl(&task_runner_provider, &shared_bitmap_manager,
                                   &task_graph_runner);