Create GLSLUniformHandler class for gpu backend

src/gpu/effects/GrDitherEffect.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrDitherEffect.h"
 #include "GrFragmentProcessor.h"
 #include "GrInvariantOutput.h"
 #include "SkRect.h"
 #include "glsl/GrGLSLFragmentProcessor.h"
 #include "glsl/GrGLSLFragmentShaderBuilder.h"
-#include "glsl/GrGLSLProgramBuilder.h"
 
 //////////////////////////////////////////////////////////////////////////////
 
 class DitherEffect : public GrFragmentProcessor {
 public:
     static GrFragmentProcessor* Create() {
         return new DitherEffect;
     }
 
     virtual ~DitherEffect() {};
@@ skipping 70 matching lines @@
 void DitherEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps,
                                          GrProcessorKeyBuilder* b) const {
     GLDitherEffect::GenKey(*this, caps, b);
 }
 
 GrGLSLFragmentProcessor* DitherEffect::onCreateGLSLInstance() const  {
     return new GLDitherEffect(*this);
 }
 
 GrFragmentProcessor* GrDitherEffect::Create() { return DitherEffect::Create(); }