Refactor how we store and use samplers in Ganesh

src/effects/SkMorphologyImageFilter.cpp

 /*
  * Copyright 2012 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkMorphologyImageFilter.h"
 
 #include "SkBitmap.h"
@@ skipping 221 matching lines @@
     fragBuilder->codeAppendf("\t\tcoord.%s -= %d.0 * %s; \n", dir, me.radius(), pixelSizeInc);
     if (me.useRange()) {
         // highBound = min(highBound, coord.x + (width-1) * pixelSize);
         fragBuilder->codeAppendf("\t\tfloat highBound = min(%s.y, coord.%s + %f * %s);",
                                  range, dir, float(width - 1), pixelSizeInc);
         // coord.x = max(lowBound, coord.x);
         fragBuilder->codeAppendf("\t\tcoord.%s = max(%s.x, coord.%s);", dir, range, dir);
     }
     fragBuilder->codeAppendf("\t\tfor (int i = 0; i < %d; i++) {\n", width);
     fragBuilder->codeAppendf("\t\t\t%s = %s(%s, ", args.fOutputColor, func, args.fOutputColor);
-    fragBuilder->appendTextureLookup(args.fTexSamplers[0], "coord");
+    fragBuilder->appendTextureLookup(uniformHandler->getSampler(args.fTexSamplers[0]), "coord");
     fragBuilder->codeAppend(");\n");
     // coord.x += pixelSize;
     fragBuilder->codeAppendf("\t\t\tcoord.%s += %s;\n", dir, pixelSizeInc);
     if (me.useRange()) {
         // coord.x = min(highBound, coord.x);
         fragBuilder->codeAppendf("\t\t\tcoord.%s = min(highBound, coord.%s);", dir, dir);
     }
     fragBuilder->codeAppend("\t\t}\n");
     SkString modulate;
     GrGLSLMulVarBy4f(&modulate, args.fOutputColor, args.fInputColor);
@@ skipping 365 matching lines @@
                     inputBM.rowBytesAsPixels(),
                     &dst, height, srcBounds);
     }
     offset->fX = bounds.left();
     offset->fY = bounds.top();
 
     return SkSpecialImage::MakeFromRaster(source->internal_getProxy(),
                                           SkIRect::MakeWH(bounds.width(), bounds.height()),
                                           dst, &source->props());
 }