Move GLSL-specific routines/classes to separate glsl directory

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 "gl/GrGLProcessor.h"
-#include "gl/GrGLSL.h"
 #include "gl/builders/GrGLProgramBuilder.h"
 
 //////////////////////////////////////////////////////////////////////////////
 
 class DitherEffect : public GrFragmentProcessor {
 public:
     static GrFragmentProcessor* Create() {
         GR_CREATE_STATIC_PROCESSOR(gDitherEffect, DitherEffect, ())
         return SkRef(gDitherEffect);
     }
@@ skipping 85 matching lines @@
 void DitherEffect::getGLProcessorKey(const GrGLSLCaps& caps,
                                      GrProcessorKeyBuilder* b) const {
     GLDitherEffect::GenKey(*this, caps, b);
 }
 
 GrGLFragmentProcessor* DitherEffect::createGLInstance() const  {
     return SkNEW_ARGS(GLDitherEffect, (*this));
 }
 
 GrFragmentProcessor* GrDitherEffect::Create() { return DitherEffect::Create(); }