Compute if a layer is drawn without LayerTree hierarchy

cc/trees/layer_tree_host_unittest_copyrequest.cc

Index: cc/trees/layer_tree_host_unittest_copyrequest.cc
diff --git a/cc/trees/layer_tree_host_unittest_copyrequest.cc b/cc/trees/layer_tree_host_unittest_copyrequest.cc
index 9db64850edf31f261c6f42997d342a2d5e10e2e2..fdce757279b6e833f03cd90f5655ef83531ccb22 100644
--- a/cc/trees/layer_tree_host_unittest_copyrequest.cc
+++ b/cc/trees/layer_tree_host_unittest_copyrequest.cc
@@ -378,37 +378,37 @@ class LayerTreeHostCopyRequestTestInHiddenSubtree
     switch (callback_count_) {
       case 1:
         // Hide the copy request layer.
-        grand_parent_layer_->SetHideLayerAndSubtree(false);
-        parent_layer_->SetHideLayerAndSubtree(false);
-        copy_layer_->SetHideLayerAndSubtree(true);
+        grand_parent_layer_->SetOpacity(1.f);
+        parent_layer_->SetOpacity(1.f);
+        copy_layer_->SetOpacity(0.f);
         AddCopyRequest(copy_layer_.get());
         break;
       case 2:
         // Hide the copy request layer's parent only.
-        grand_parent_layer_->SetHideLayerAndSubtree(false);
-        parent_layer_->SetHideLayerAndSubtree(true);
-        copy_layer_->SetHideLayerAndSubtree(false);
+        grand_parent_layer_->SetOpacity(1.f);
+        parent_layer_->SetOpacity(0.f);
+        copy_layer_->SetOpacity(1.f);
         AddCopyRequest(copy_layer_.get());
         break;
       case 3:
         // Hide the copy request layer's grand parent only.
-        grand_parent_layer_->SetHideLayerAndSubtree(true);
-        parent_layer_->SetHideLayerAndSubtree(false);
-        copy_layer_->SetHideLayerAndSubtree(false);
+        grand_parent_layer_->SetOpacity(0.f);
+        parent_layer_->SetOpacity(1.f);
+        copy_layer_->SetOpacity(1.f);
         AddCopyRequest(copy_layer_.get());
         break;
       case 4:
         // Hide the copy request layer's parent and grandparent.
-        grand_parent_layer_->SetHideLayerAndSubtree(true);
-        parent_layer_->SetHideLayerAndSubtree(true);
-        copy_layer_->SetHideLayerAndSubtree(false);
+        grand_parent_layer_->SetOpacity(0.f);
+        parent_layer_->SetOpacity(0.f);
+        copy_layer_->SetOpacity(1.f);
         AddCopyRequest(copy_layer_.get());
         break;
       case 5:
         // Hide the copy request layer as well as its parent and grandparent.
-        grand_parent_layer_->SetHideLayerAndSubtree(true);
-        parent_layer_->SetHideLayerAndSubtree(true);
-        copy_layer_->SetHideLayerAndSubtree(true);
+        grand_parent_layer_->SetOpacity(0.f);
+        parent_layer_->SetOpacity(0.f);
+        copy_layer_->SetOpacity(0.f);
         AddCopyRequest(copy_layer_.get());
         break;
       case 6:
@@ -439,7 +439,7 @@ class LayerTreeHostTestHiddenSurfaceNotAllocatedForSubtreeCopyRequest
 
     grand_parent_layer_ = FakePictureLayer::Create(layer_settings(), &client_);
     grand_parent_layer_->SetBounds(gfx::Size(15, 15));
-    grand_parent_layer_->SetHideLayerAndSubtree(true);
+    grand_parent_layer_->SetOpacity(0.f);
     root_->AddChild(grand_parent_layer_);
 
     // parent_layer_ owns a render surface.
@@ -1162,8 +1162,8 @@ class LayerTreeHostCopyRequestTestMultipleDrawsHiddenCopyRequest
 
     child_ = FakePictureLayer::Create(layer_settings(), &client_);
     child_->SetBounds(gfx::Size(10, 10));
+    child_->SetOpacity(0.f);
     root->AddChild(child_);
-    child_->SetHideLayerAndSubtree(true);
 
     layer_tree_host()->SetRootLayer(root);
     LayerTreeHostCopyRequestTest::SetupTree();