replace impl of SkLightingColorFilter with SkColorMatrixFilter

include/effects/SkColorMatrix.h

 /*
  * Copyright 2007 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 SkColorMatrix_DEFINED
 #define SkColorMatrix_DEFINED
 
 #include "SkScalar.h"
 
 class SK_API SkColorMatrix {
 public:
     SkScalar    fMat[20];
 
+    enum Elem {
+        kR_Scale    = 0,
+        kG_Scale    = 6,
+        kB_Scale    = 12,
+        kA_Scale    = 18,
+        
+        kR_Trans    = 4,
+        kG_Trans    = 9,
+        kB_Trans    = 14,
+        kA_Trans    = 19,
+    };
+
     void setIdentity();
     void setScale(SkScalar rScale, SkScalar gScale, SkScalar bScale,
                   SkScalar aScale = SK_Scalar1);
     void preScale(SkScalar rScale, SkScalar gScale, SkScalar bScale,
                   SkScalar aScale = SK_Scalar1);
     void postScale(SkScalar rScale, SkScalar gScale, SkScalar bScale,
                    SkScalar aScale = SK_Scalar1);
+    void postTranslate(SkScalar rTrans, SkScalar gTrans, SkScalar bTrans,
+                       SkScalar aTrans = 0);
 
     enum Axis {
         kR_Axis = 0,
         kG_Axis = 1,
         kB_Axis = 2
     };
     void setRotate(Axis, SkScalar degrees);
     void setSinCos(Axis, SkScalar sine, SkScalar cosine);
     void preRotate(Axis, SkScalar degrees);
     void postRotate(Axis, SkScalar degrees);
 
     void setConcat(const SkColorMatrix& a, const SkColorMatrix& b);
     void preConcat(const SkColorMatrix& mat) { this->setConcat(*this, mat); }
     void postConcat(const SkColorMatrix& mat) { this->setConcat(mat, *this); }
 
     void setSaturation(SkScalar sat);
     void setRGB2YUV();
     void setYUV2RGB();
 
     bool operator==(const SkColorMatrix& other) const {
         return 0 == memcmp(fMat, other.fMat, sizeof(fMat));
     }
 
     bool operator!=(const SkColorMatrix& other) const { return !((*this) == other); }
 };
 
 #endif