stop using SkXfermode -- use SkBlendMode instead

components/exo/shell_surface_unittest.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 "ash/aura/wm_window_aura.h"
 #include "ash/common/accessibility_delegate.h"
 #include "ash/common/wm/window_state.h"
 #include "ash/common/wm/wm_event.h"
 #include "ash/common/wm_shell.h"
 #include "ash/public/cpp/shell_window_ids.h"
@@ skipping 409 matching lines @@
       new Buffer(exo_test_helper()->CreateGpuMemoryBuffer(buffer_size)));
   child->Attach(child_buffer.get());
   std::unique_ptr<SubSurface> sub_surface(
       display->CreateSubSurface(child.get(), surface.get()));
   surface->SetSubSurfacePosition(child.get(), gfx::Point(10, 10));
   child->Commit();
   surface->Commit();
   EXPECT_FALSE(ash::WmShell::Get()->IsSystemModalWindowOpen());
 
   // Making the surface opaque shouldn't make it modal either.
-  child->SetBlendMode(SkXfermode::kSrc_Mode);
+  child->SetBlendMode(SkBlendMode::kSrc);
   child->Commit();
   surface->Commit();
   EXPECT_FALSE(ash::WmShell::Get()->IsSystemModalWindowOpen());
 
   // Setting input regions won't make it modal either.
   surface->SetInputRegion(
       SkRegion(gfx::RectToSkIRect(gfx::Rect(10, 10, 100, 100))));
   surface->Commit();
   EXPECT_FALSE(ash::WmShell::Get()->IsSystemModalWindowOpen());
 
@@ skipping 366 matching lines @@
   shell_surface.OnAccessibilityModeChanged();
   shell_surface2.OnAccessibilityModeChanged();
 
   EXPECT_TRUE(shell_surface.shadow_underlay()->IsVisible());
   EXPECT_EQ(shadow_bounds, shell_surface.shadow_underlay()->bounds());
   EXPECT_EQ(shadow_bounds, shell_surface2.shadow_underlay()->bounds());
 }
 
 }  // namespace
 }  // namespace exo