Step towards variable length effect keys.

src/effects/SkLumaColorFilter.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkLumaColorFilter.h"
 
 #include "SkColorPriv.h"
 #include "SkString.h"
 
 #if SK_SUPPORT_GPU
 #include "gl/GrGLEffect.h"
+#include "gl/GrGLShaderBuilder.h"
 #include "GrContext.h"
 #include "GrTBackendEffectFactory.h"
 #endif
 
 void SkLumaColorFilter::filterSpan(const SkPMColor src[], int count,
                                    SkPMColor dst[]) const {
     for (int i = 0; i < count; ++i) {
         SkPMColor c = src[i];
 
         /*
@@ skipping 93 matching lines @@
 private:
     virtual bool onIsEqual(const GrEffect&) const SK_OVERRIDE {
         return true;
     }
 };
 
 GrEffect* SkLumaColorFilter::asNewEffect(GrContext*) const {
     return LumaColorFilterEffect::Create();
 }
 #endif