Refactor how we store and use samplers in Ganesh

src/effects/gradients/SkGradientShaderPriv.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkGradientShaderPriv_DEFINED
 #define SkGradientShaderPriv_DEFINED
 
@@ skipping 405 matching lines @@
     // emit code that gets a fragment's color from an expression for t; Has branches for 3 separate
     // control flows inside -- 2 color gradients, 3 color symmetric gradients (both using
     // native GLSL mix), and 4+ color gradients that use the traditional texture lookup.
     void emitColor(GrGLSLFPFragmentBuilder* fragBuilder,
                    GrGLSLUniformHandler* uniformHandler,
                    const GrGLSLCaps* caps,
                    const GrGradientEffect&,
                    const char* gradientTValue,
                    const char* outputColor,
                    const char* inputColor,
-                   const SamplerArray& texSamplers);
+                   const SamplerHandle* texSamplers);
 
 private:
     enum {
         kPremulTypeKeyBitCnt = 1,
         kPremulTypeMask = 1,
         kPremulBeforeInterpKey = kPremulTypeMask,
 
         kTwoColorKey = 2 << kPremulTypeKeyBitCnt,
         kThreeColorKey = 3 << kPremulTypeKeyBitCnt,
         kColorKeyMask = kTwoColorKey | kThreeColorKey,
@@ skipping 10 matching lines @@
     GrGLSLProgramDataManager::UniformHandle fColorStartUni;
     GrGLSLProgramDataManager::UniformHandle fColorMidUni;
     GrGLSLProgramDataManager::UniformHandle fColorEndUni;
 
     typedef GrGLSLFragmentProcessor INHERITED;
 };
 
 #endif
 
 #endif