Add a hide_layer_and_subtree() flag to cc::Layer

cc/layers/layer_impl_unittest.cc

 // Copyright 2011 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/layers/layer_impl.h"
 
 #include "cc/test/fake_impl_proxy.h"
 #include "cc/test/fake_layer_tree_host_impl.h"
 #include "cc/test/fake_output_surface.h"
 #include "cc/trees/layer_tree_impl.h"
@@ skipping 113 matching lines @@
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetContentsOpaque(true));
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(
       root->SetReplicaLayer(LayerImpl::Create(host_impl.active_tree(), 5)));
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetPosition(arbitrary_point_f));
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetPreserves3d(true));
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(
       root->SetDoubleSided(false));  // constructor initializes it to "true".
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->ScrollBy(arbitrary_vector2d));
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetScrollDelta(gfx::Vector2d()));
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetScrollOffset(arbitrary_vector2d));
+  EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetHideLayerAndSubtree(true));
 
   // Changing these properties only affects the layer itself.
   EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(root->SetContentBounds(arbitrary_size));
   EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(
       root->SetContentsScale(arbitrary_number, arbitrary_number));
   EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(root->SetDrawsContent(true));
   EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(
       root->SetBackgroundColor(arbitrary_color));
   EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(
       root->SetBackgroundFilters(arbitrary_filters));
@@ skipping 174 matching lines @@
               << "Flags: " << contents_opaque << ", " << layer_opaque << ", "
               << host_opaque << "\n";
         }
       }
     }
   }
 }
 
 }  // namespace
 }  // namespace cc