cc: Move blend_mode to the effect tree

cc/layers/layer_impl_unittest.cc

Index: cc/layers/layer_impl_unittest.cc
diff --git a/cc/layers/layer_impl_unittest.cc b/cc/layers/layer_impl_unittest.cc
index 1a65acb4e91bd02cecbc072b869d8b4afa296e9c..5b8af7e4ca7a0ffc8e476170a663710cdd173b72 100644
--- a/cc/layers/layer_impl_unittest.cc
+++ b/cc/layers/layer_impl_unittest.cc
@@ -156,7 +156,6 @@ TEST(LayerImplTest, VerifyLayerChangesAreTrackedProperly) {
   arbitrary_transform.Scale3d(0.1f, 0.2f, 0.3f);
   FilterOperations arbitrary_filters;
   arbitrary_filters.Append(FilterOperation::CreateOpacityFilter(0.5f));
-  SkXfermode::Mode arbitrary_blend_mode = SkXfermode::kMultiply_Mode;
 
   // These properties are internal, and should not be considered "change" when
   // they are used.
@@ -215,8 +214,6 @@ TEST(LayerImplTest, VerifyLayerChangesAreTrackedProperly) {
   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(
       root->SetTransform(arbitrary_transform));
   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetContentsOpaque(true));
-  EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(
-      root->SetBlendMode(arbitrary_blend_mode));
   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetDrawsContent(true));
   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetBounds(bounds_size));
 }
@@ -257,7 +254,6 @@ TEST(LayerImplTest, VerifyNeedsUpdateDrawProperties) {
   arbitrary_transform.Scale3d(0.1f, 0.2f, 0.3f);
   FilterOperations arbitrary_filters;
   arbitrary_filters.Append(FilterOperation::CreateOpacityFilter(0.5f));
-  SkXfermode::Mode arbitrary_blend_mode = SkXfermode::kMultiply_Mode;
 
   // Set layer to draw content so that their draw property by property trees is
   // verified.
@@ -313,8 +309,6 @@ TEST(LayerImplTest, VerifyNeedsUpdateDrawProperties) {
       layer->SetBackgroundColor(arbitrary_color));
   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(
       layer->OnOpacityAnimated(arbitrary_number));
-  VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetBlendMode(arbitrary_blend_mode);
-                                      layer->NoteLayerPropertyChanged());
   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(
       layer->OnTransformAnimated(arbitrary_transform));
   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetBounds(arbitrary_size);
@@ -334,8 +328,6 @@ TEST(LayerImplTest, VerifyNeedsUpdateDrawProperties) {
   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(
       layer->SetBackgroundColor(arbitrary_color));
   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(
-      layer->SetBlendMode(arbitrary_blend_mode));
-  VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(
       layer->SetTransform(arbitrary_transform));
   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetBounds(arbitrary_size));
   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetElementId(ElementId(2, 0)));