stop using SkXfermode -- use SkBlendMode instead

cc/test/surface_hittest_test_helpers.cc

 // Copyright 2015 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/test/surface_hittest_test_helpers.h"
 
 #include "cc/output/compositor_frame.h"
 #include "cc/output/delegated_frame_data.h"
 #include "cc/quads/render_pass_draw_quad.h"
 #include "cc/quads/shared_quad_state.h"
 #include "cc/quads/solid_color_draw_quad.h"
 #include "cc/quads/surface_draw_quad.h"
 
 namespace cc {
 namespace test {
 
 void CreateSharedQuadState(RenderPass* pass,
                            const gfx::Transform& transform,
                            const gfx::Rect& root_rect) {
   SharedQuadState* child_shared_state = pass->CreateAndAppendSharedQuadState();
   child_shared_state->SetAll(transform, root_rect.size(), root_rect, root_rect,
-                             false, 1.0f, SkXfermode::kSrcOver_Mode, 0);
+                             false, 1.0f, SkBlendMode::kSrcOver, 0);
 }
 
 void CreateSolidColorDrawQuad(RenderPass* pass,
                               const gfx::Transform& transform,
                               const gfx::Rect& root_rect,
                               const gfx::Rect& quad_rect) {
   CreateSharedQuadState(pass, transform, root_rect);
   SolidColorDrawQuad* color_quad =
       pass->CreateAndAppendDrawQuad<SolidColorDrawQuad>();
   color_quad->SetNew(pass->shared_quad_state_list.back(), quad_rect, quad_rect,
@@ skipping 101 matching lines @@
   // If the point provided falls outside the inset, then we accept this surface.
   if (!bounds.Contains(point_in_quad_space)) {
     ++accept_target_overrides_;
     return true;
   }
   return false;
 }
 
 }  // namespace test
 }  // namespace cc