stop using SkXfermode -- use SkBlendMode instead

components/exo/surface.cc

Index: components/exo/surface.cc
diff --git a/components/exo/surface.cc b/components/exo/surface.cc
index eda22743a678d08f7d042eeeff16d8bfefd0286d..54fae08435fd626f29af6f1b1dc42ba830145731 100644
--- a/components/exo/surface.cc
+++ b/components/exo/surface.cc
@@ -420,7 +420,7 @@ void Surface::SetOnlyVisibleOnSecureOutput(bool only_visible_on_secure_output) {
   pending_state_.only_visible_on_secure_output = only_visible_on_secure_output;
 }
 
-void Surface::SetBlendMode(SkXfermode::Mode blend_mode) {
+void Surface::SetBlendMode(SkBlendMode blend_mode) {
   TRACE_EVENT1("exo", "Surface::SetBlendMode", "blend_mode", blend_mode);
 
   pending_state_.blend_mode = blend_mode;
@@ -502,7 +502,7 @@ void Surface::CommitSurfaceHierarchy() {
         base::Bind(&RequireCallback, base::Unretained(surface_manager_)),
         content_size_, contents_surface_to_layer_scale, content_size_);
     window_->layer()->SetFillsBoundsOpaquely(
-        state_.blend_mode == SkXfermode::kSrc_Mode ||
+        state_.blend_mode == SkBlendMode::kSrc ||
         state_.opaque_region.contains(
             gfx::RectToSkIRect(gfx::Rect(content_size_))));
   }
@@ -820,7 +820,7 @@ void Surface::UpdateSurface(bool full_damage) {
           render_pass->CreateAndAppendDrawQuad<cc::TextureDrawQuad>();
       float vertex_opacity[4] = {1.0, 1.0, 1.0, 1.0};
       gfx::Rect opaque_rect;
-      if (state_.blend_mode == SkXfermode::kSrc_Mode ||
+      if (state_.blend_mode == SkBlendMode::kSrc ||
           state_.opaque_region.contains(gfx::RectToSkIRect(quad_rect))) {
         opaque_rect = quad_rect;
       } else if (state_.opaque_region.isRect()) {