stop using SkXfermode -- use SkBlendMode instead

cc/output/renderer_pixeltest.cc

 // Copyright 2012 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 <stddef.h>
 #include <stdint.h>
 #include <memory>
 
 #include "base/message_loop/message_loop.h"
 #include "cc/base/math_util.h"
@@ skipping 45 matching lines @@
 
 SharedQuadState* CreateTestSharedQuadState(
     gfx::Transform quad_to_target_transform,
     const gfx::Rect& rect,
     RenderPass* render_pass) {
   const gfx::Size layer_bounds = rect.size();
   const gfx::Rect visible_layer_rect = rect;
   const gfx::Rect clip_rect = rect;
   const bool is_clipped = false;
   const float opacity = 1.0f;
-  const SkXfermode::Mode blend_mode = SkXfermode::kSrcOver_Mode;
+  const SkBlendMode blend_mode = SkBlendMode::kSrcOver;
   int sorting_context_id = 0;
   SharedQuadState* shared_state = render_pass->CreateAndAppendSharedQuadState();
   shared_state->SetAll(quad_to_target_transform, layer_bounds,
                        visible_layer_rect, clip_rect, is_clipped, opacity,
                        blend_mode, sorting_context_id);
   return shared_state;
 }
 
 SharedQuadState* CreateTestSharedQuadStateClipped(
     gfx::Transform quad_to_target_transform,
     const gfx::Rect& rect,
     const gfx::Rect& clip_rect,
     RenderPass* render_pass) {
   const gfx::Size layer_bounds = rect.size();
   const gfx::Rect visible_layer_rect = clip_rect;
   const bool is_clipped = true;
   const float opacity = 1.0f;
-  const SkXfermode::Mode blend_mode = SkXfermode::kSrcOver_Mode;
+  const SkBlendMode blend_mode = SkBlendMode::kSrcOver;
   int sorting_context_id = 0;
   SharedQuadState* shared_state = render_pass->CreateAndAppendSharedQuadState();
   shared_state->SetAll(quad_to_target_transform, layer_bounds,
                        visible_layer_rect, clip_rect, is_clipped, opacity,
                        blend_mode, sorting_context_id);
   return shared_state;
 }
 
 void CreateTestRenderPassDrawQuad(const SharedQuadState* shared_state,
                                   const gfx::Rect& rect,
@@ skipping 3177 matching lines @@
 
   EXPECT_TRUE(this->RunPixelTest(
       &pass_list, base::FilePath(FILE_PATH_LITERAL("spiral.png")),
       FuzzyPixelOffByOneComparator(true)));
 }
 
 #endif  // !defined(OS_ANDROID)
 
 }  // namespace
 }  // namespace cc