Move GLSL-specific routines/classes to separate glsl directory

src/gpu/effects/GrCustomXfermode.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "effects/GrCustomXfermode.h"
 #include "effects/GrCustomXfermodePriv.h"
 
 #include "GrCoordTransform.h"
 #include "GrContext.h"
 #include "GrFragmentProcessor.h"
 #include "GrInvariantOutput.h"
 #include "GrProcessor.h"
 #include "GrTexture.h"
 #include "GrTextureAccess.h"
 #include "SkXfermode.h"
 #include "gl/GrGLCaps.h"
 #include "gl/GrGLGpu.h"
 #include "gl/GrGLProcessor.h"
 #include "gl/GrGLProgramDataManager.h"
 #include "gl/builders/GrGLProgramBuilder.h"
+#include "glsl/GrGLSLCaps.h"
 
 bool GrCustomXfermode::IsSupportedMode(SkXfermode::Mode mode) {
     return mode > SkXfermode::kLastCoeffMode && mode <= SkXfermode::kLastMode;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // Static helpers
 ///////////////////////////////////////////////////////////////////////////////
 
 static GrBlendEquation hw_blend_equation(SkXfermode::Mode mode) {
@@ skipping 782 matching lines @@
 GR_DEFINE_XP_FACTORY_TEST(GrCustomXPFactory);
 GrXPFactory* GrCustomXPFactory::TestCreate(SkRandom* rand,
                                            GrContext*,
                                            const GrCaps&,
                                            GrTexture*[]) {
     int mode = rand->nextRangeU(SkXfermode::kLastCoeffMode + 1, SkXfermode::kLastSeparableMode);
 
     return SkNEW_ARGS(GrCustomXPFactory, (static_cast<SkXfermode::Mode>(mode)));
 }