Update Skia transfer modes to match changes in Skia as of r239

views/controls/button/text_button.cc

 // Copyright (c) 2006-2008 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 "views/controls/button/text_button.h"
 
 #include "app/gfx/canvas.h"
 #include "app/l10n_util.h"
 #include "app/throb_animation.h"
 #include "app/resource_bundle.h"
@@ skipping 191 matching lines @@
 void TextButton::Paint(gfx::Canvas* canvas, bool for_drag) {
   if (!for_drag) {
     PaintBackground(canvas);
 
     if (hover_animation_->IsAnimating()) {
       // Draw the hover bitmap into an offscreen buffer, then blend it
       // back into the current canvas.
       canvas->saveLayerAlpha(NULL,
           static_cast<int>(hover_animation_->GetCurrentValue() * 255),
           SkCanvas::kARGB_NoClipLayer_SaveFlag);
-      canvas->drawARGB(0, 255, 255, 255, SkPorterDuff::kClear_Mode);
+      canvas->drawARGB(0, 255, 255, 255, SkXfermode::kClear_Mode);
       PaintBorder(canvas);
       canvas->restore();
     } else if (state_ == BS_HOT || state_ == BS_PUSHED) {
       PaintBorder(canvas);
     }
 
     PaintFocusBorder(canvas);
   }
 
   gfx::Insets insets = GetInsets();
@@ skipping 114 matching lines @@
 
 bool TextButton::OnMousePressed(const MouseEvent& e) {
   return true;
 }
 
 void TextButton::Paint(gfx::Canvas* canvas) {
   Paint(canvas, false);
 }
 
 }  // namespace views