remove code behind SK_SUPPORT_LEGACY_PROCXFERMODE

src/utils/debugger/SkDebugCanvas.cpp

 
 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "SkColorPriv.h"
@@ skipping 107 matching lines @@
 
         return gTable[SK_ARRAY_COUNT(gTable)-1];
     }
 
     virtual Factory getFactory() const SK_OVERRIDE { return NULL; }
 #ifndef SK_IGNORE_TO_STRING
     virtual void toString(SkString* str) const { str->set("OverdrawXfermode"); }
 #endif
 };
 
-// The OverdrawFilter modifies every paint to use an SkProcXfermode which
-// in turn invokes OverdrawXferModeProc
 class SkOverdrawFilter : public SkDrawFilter {
 public:
     SkOverdrawFilter() {
         fXferMode = SkNEW(OverdrawXfermode);
     }
 
     virtual ~SkOverdrawFilter() {
         delete fXferMode;
     }
 
@@ skipping 443 matching lines @@
 
 void SkDebugCanvas::didSetMatrix(const SkMatrix& matrix) {
     this->addDrawCommand(new SkSetMatrixCommand(matrix));
     this->INHERITED::didSetMatrix(matrix);
 }
 
 void SkDebugCanvas::toggleCommand(int index, bool toggle) {
     SkASSERT(index < fCommandVector.count());
     fCommandVector[index]->setVisible(toggle);
 }