Refactor how we store and use samplers in Ganesh

src/gpu/effects/GrBicubicEffect.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 "GrBicubicEffect.h"
 #include "GrInvariantOutput.h"
 #include "glsl/GrGLSLFragmentShaderBuilder.h"
@@ skipping 81 matching lines @@
             SkString coord;
             coord.printf("coord + %s * vec2(%d, %d)", imgInc, x - 1, y - 1);
             SkString sampleVar;
             sampleVar.printf("rowColors[%d]", x);
             fDomain.sampleTexture(fragBuilder,
                                   args.fUniformHandler,
                                   args.fGLSLCaps,
                                   domain,
                                   sampleVar.c_str(),
                                   coord,
-                                  args.fTexSamplers[0]);
+                                  uniformHandler->getSampler(args.fTexSamplers[0]));
         }
         fragBuilder->codeAppendf(
             "\tvec4 s%d = %s(%s, f.x, rowColors[0], rowColors[1], rowColors[2], rowColors[3]);\n",
             y, cubicBlendName.c_str(), coeff);
     }
     SkString bicubicColor;
     bicubicColor.printf("%s(%s, f.y, s0, s1, s2, s3)", cubicBlendName.c_str(), coeff);
     fragBuilder->codeAppendf("\t%s = %s;\n",
                              args.fOutputColor, (GrGLSLExpr4(bicubicColor.c_str()) *
                                                  GrGLSLExpr4(args.fInputColor)).c_str());
@@ skipping 101 matching lines @@
             // Use bilerp to handle rotation or fractional translation.
             *filterMode = GrTextureParams::kBilerp_FilterMode;
         }
         return false;
     }
     // When we use the bicubic filtering effect each sample is read from the texture using
     // nearest neighbor sampling.
     *filterMode = GrTextureParams::kNone_FilterMode;
     return true;
 }