move declaration of CreateLightingFilter into SkColorMatrixFilter

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
 #define SkColorFilter_DEFINED
 
@@ skipping 88 matching lines @@
         If the Mode is DST, this function will return NULL (since that
         mode will have no effect on the result).
         @param c    The source color used with the specified mode
         @param mode The xfermode mode that is applied to each color in
                         the colorfilter's filterSpan[16,32] methods
         @return colorfilter object that applies the src color and mode,
                     or NULL if the mode will have no effect.
     */
     static SkColorFilter* CreateModeFilter(SkColor c, SkXfermode::Mode mode);
 
-    /** Create a colorfilter that multiplies the RGB channels by one color, and
-        then adds a second color, pinning the result for each component to
-        [0..255]. The alpha components of the mul and add arguments
-        are ignored.
-    */
+    // DEPRECATED -- call this from SkColorMatrixFilter instead -- see skbug.com/4791
     static SkColorFilter* CreateLightingFilter(SkColor mul, SkColor add);
 
     /** Construct a colorfilter whose effect is to first apply the inner filter and then apply
      *  the outer filter to the result of the inner's.
      *  The reference counts for outer and inner are incremented.
      *
      *  Due to internal limits, it is possible that this will return NULL, so the caller must
      *  always check.
      */
     static SkColorFilter* CreateComposeFilter(SkColorFilter* outer, SkColorFilter* inner);
@@ skipping 31 matching lines @@
      *
      *  e.g. compose(filter, compose(compose(filter, filter), filter)) --> 4
      */
     virtual int privateComposedFilterCount() const { return 1; }
     friend class SkComposeColorFilter;
 
     typedef SkFlattenable INHERITED;
 };
 
 #endif