Add printing of SkColorFilter-derived classes to debugger

include/core/SkColorFilter.h

 
 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkColorFilter_DEFINED
@@ skipping 102 matching lines @@
         [0..255]. The alpha components of the mul and add arguments
         are ignored.
     */
     static SkColorFilter* CreateLightingFilter(SkColor mul, SkColor add);
 
     /** A subclass may implement this factory function to work with the GPU backend. If the return
         is non-NULL then the caller owns a ref on the returned object.
      */
     virtual GrEffectRef* asNewEffect(GrContext*) const;
 
+    SkDEVCODE(virtual void toString(SkString* str) const = 0;)
+
     SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP()
 protected:
     SkColorFilter() {}
     SkColorFilter(SkFlattenableReadBuffer& rb) : INHERITED(rb) {}
 
 private:
     typedef SkFlattenable INHERITED;
 };
 
 #endif