Move GLSL-specific routines/classes to separate glsl directory

src/gpu/effects/GrConvolutionEffect.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 "GrConvolutionEffect.h"
 #include "gl/GrGLProcessor.h"
-#include "gl/GrGLSL.h"
 #include "gl/GrGLTexture.h"
 #include "gl/builders/GrGLProgramBuilder.h"
 
 // For brevity
 typedef GrGLProgramDataManager::UniformHandle UniformHandle;
 
 class GrGLConvolutionEffect : public GrGLFragmentProcessor {
 public:
     GrGLConvolutionEffect(const GrProcessor&);
 
@@ skipping 215 matching lines @@
     }
 
     bool useBounds = random->nextBool();
     return GrConvolutionEffect::Create(textures[texIdx],
                                        dir,
                                        radius,
                                        kernel,
                                        useBounds,
                                        bounds);
 }