Move SkColorMatrixFilter implementation to core.

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 104 matching lines @@
 
     /** 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);
 
+    /** Construct a color filter that transforms a color by a 4x5 matrix. The matrix is in row-
+     *  major order and the translation column is specified in unnormalized, 0...255, space.
+     */
+    static SkColorFilter* CreateMatrixFilterRowMajor255(const SkScalar array[20]);
+
     /**
      *  A subclass may implement this factory function to work with the GPU backend. It returns
      *  a GrFragmentProcessor that implemets the color filter in GPU shader code.
      *
      *  The fragment processor receives a premultiplied input color and produces a premultiplied
      *  output color.
      *
      *  A null return indicates that the color filter isn't implemented for the GPU backend.
      */
     virtual const GrFragmentProcessor* asFragmentProcessor(GrContext*) const {
@@ skipping 20 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