cc: Distinguish single texture mask from normal masks

cc/trees/layer_tree_host_unittest.cc

Index: cc/trees/layer_tree_host_unittest.cc
diff --git a/cc/trees/layer_tree_host_unittest.cc b/cc/trees/layer_tree_host_unittest.cc
index 6706ba89fbf7c5ee41a5aba996458e369ad115b2..0f6458249e8a50489cf565e6a9b944665b9abf09 100644
--- a/cc/trees/layer_tree_host_unittest.cc
+++ b/cc/trees/layer_tree_host_unittest.cc
@@ -6610,7 +6610,7 @@ class LayerTreeTestMaskLayerForSurfaceWithClippedLayer : public LayerTreeTest {
 
     gfx::Size mask_size(100, 100);
     mask_layer->SetBounds(mask_size);
-    mask_layer->SetIsMask(true);
+    mask_layer->SetLayerMaskType(Layer::LayerMaskType::MULTI_TEXTURE_MASK);
 
     layer_tree_host()->SetRootLayer(root);
     LayerTreeTest::SetupTree();
@@ -6695,7 +6695,7 @@ class LayerTreeTestMaskLayerWithScaling : public LayerTreeTest {
     content_layer->SetBounds(scaling_layer_size);
 
     mask_layer->SetBounds(scaling_layer_size);
-    mask_layer->SetIsMask(true);
+    mask_layer->SetLayerMaskType(Layer::LayerMaskType::MULTI_TEXTURE_MASK);
 
     layer_tree_host()->SetRootLayer(root);
     LayerTreeTest::SetupTree();
@@ -6784,7 +6784,7 @@ class LayerTreeTestMaskLayerWithDifferentBounds : public LayerTreeTest {
 
     gfx::Size mask_size(100, 100);
     mask_layer->SetBounds(mask_size);
-    mask_layer->SetIsMask(true);
+    mask_layer->SetLayerMaskType(Layer::LayerMaskType::MULTI_TEXTURE_MASK);
 
     layer_tree_host()->SetRootLayer(root);
     LayerTreeTest::SetupTree();