stop using SkXfermode -- use SkBlendMode instead

cc/trees/layer_tree_host_common_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/trees/layer_tree_host_common.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <memory>
@@ skipping 1549 matching lines @@
             child->render_surface()->DrawableContentRect());
 }
 
 TEST_F(LayerTreeHostCommonTest, RenderSurfaceForBlendMode) {
   LayerImpl* root = root_layer_for_testing();
   LayerImpl* child = AddChild<LayerImpl>(root);
 
   root->SetBounds(gfx::Size(10, 10));
   child->SetBounds(gfx::Size(10, 10));
   child->SetDrawsContent(true);
-  child->test_properties()->blend_mode = SkXfermode::kMultiply_Mode;
+  child->test_properties()->blend_mode = SkBlendMode::kMultiply;
   child->test_properties()->opacity = 0.5f;
   child->test_properties()->force_render_surface = true;
   ExecuteCalculateDrawProperties(root);
 
   // Since the child layer has a blend mode other than normal, it should get
   // its own render surface. Also, layer's draw_properties should contain the
   // default blend mode, since the render surface becomes responsible for
   // applying the blend mode.
   ASSERT_TRUE(child->render_surface());
   EXPECT_EQ(1.0f, child->draw_opacity());
   EXPECT_EQ(0.5f, child->render_surface()->draw_opacity());
-  EXPECT_EQ(SkXfermode::kSrcOver_Mode, child->draw_blend_mode());
+  EXPECT_EQ(SkBlendMode::kSrcOver, child->draw_blend_mode());
 }
 
 TEST_F(LayerTreeHostCommonTest, RenderSurfaceDrawOpacity) {
   LayerImpl* root = root_layer_for_testing();
   LayerImpl* surface1 = AddChildToRoot<LayerImpl>();
   LayerImpl* not_surface = AddChild<LayerImpl>(surface1);
   LayerImpl* surface2 = AddChild<LayerImpl>(not_surface);
 
   root->SetBounds(gfx::Size(10, 10));
   surface1->SetBounds(gfx::Size(10, 10));
@@ skipping 8941 matching lines @@
   EXPECT_EQ(scroll_child6.id, grand_child10->scroll_tree_index());
   EXPECT_EQ(scroll_root1.id, parent3->scroll_tree_index());
   EXPECT_EQ(scroll_child7.id, child8->scroll_tree_index());
   EXPECT_EQ(scroll_root1.id, parent4->scroll_tree_index());
   EXPECT_EQ(scroll_root1.id, child9->scroll_tree_index());
   EXPECT_EQ(scroll_root1.id, grand_child12->scroll_tree_index());
 }
 
 }  // namespace
 }  // namespace cc