Make all GrFragmentProcessors GL independent.

src/effects/gradients/SkLinearGradient.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkLinearGradient.h"
 
 static inline int repeat_bits(int x, const int bits) {
@@ skipping 469 matching lines @@
 
 private:
     GrLinearGradient(GrContext* ctx,
                      const SkLinearGradient& shader,
                      const SkMatrix& matrix,
                      SkShader::TileMode tm)
         : INHERITED(ctx, shader, matrix, tm) {
         this->initClassID<GrLinearGradient>();
     }
 
-    GrGLFragmentProcessor* onCreateGLInstance() const override {
+    GrGLSLFragmentProcessor* onCreateGLInstance() const override {
         return new GrGLLinearGradient(*this);
     }
 
     virtual void onGetGLProcessorKey(const GrGLSLCaps& caps,
                                      GrProcessorKeyBuilder* b) const override {
         GrGLLinearGradient::GenKey(*this, caps, b);
     }
 
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
@@ skipping 68 matching lines @@
     str->append("SkLinearGradient (");
 
     str->appendf("start: (%f, %f)", fStart.fX, fStart.fY);
     str->appendf(" end: (%f, %f) ", fEnd.fX, fEnd.fY);
 
     this->INHERITED::toString(str);
 
     str->append(")");
 }
 #endif