Move loops that chain together effects into GrGLShaderBuilder from GrGLProgram.

src/gpu/gl/GrGLEffectMatrix.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 "GrGLEffectMatrix.h"
 #include "GrDrawEffect.h"
 #include "GrTexture.h"
@@ skipping 69 matching lines @@
         suffixedUniName.append(suffix);
         uniName = suffixedUniName.c_str();
     }
     if (kVoid_GrSLType != fUniType) {
         fUni = builder->addUniform(GrGLShaderBuilder::kVertex_ShaderType,
                                    fUniType,
                                    uniName,
                                    &uniName);
     }
 
-    const char* varyingName = "StageCoord";
+    const char* varyingName = "MatrixCoord";
     SkString suffixedVaryingName;
     if (NULL != suffix) {
         suffixedVaryingName.append(varyingName);
         suffixedVaryingName.append(suffix);
         varyingName = suffixedVaryingName.c_str();
     }
     const char* vsVaryingName;
     const char* fsVaryingName;
     builder->addVarying(varyingType, varyingName, &vsVaryingName, &fsVaryingName);
 
@@ skipping 128 matching lines @@
             if (!fPrevMatrix.cheapEqualTo(combined)) {
                 uniformManager.setSkMatrix(fUni, combined);
                 fPrevMatrix = combined;
             }
             break;
         }
         default:
             GrCrash("Unexpected uniform type.");
     }
 }