Remove tab parameter from GrGLSLMulVarBy4f function

src/effects/SkMagnifierImageFilter.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 "SkBitmap.h"
 #include "SkMagnifierImageFilter.h"
 #include "SkColorPriv.h"
@@ skipping 150 matching lines @@
     fsBuilder->codeAppend("\t\t\tweight = min(min(delta_squared.x, delta_squared.y), 1.0);\n");
     fsBuilder->codeAppend("\t\t}\n");
 
     fsBuilder->codeAppend("\t\tvec2 mix_coord = mix(coord, zoom_coord, weight);\n");
     fsBuilder->codeAppend("\t\tvec4 output_color = ");
     fsBuilder->appendTextureLookup(samplers[0], "mix_coord");
     fsBuilder->codeAppend(";\n");
 
     fsBuilder->codeAppendf("\t\t%s = output_color;", outputColor);
     SkString modulate;
-    GrGLSLMulVarBy4f(&modulate, 2, outputColor, inputColor);
+    GrGLSLMulVarBy4f(&modulate, outputColor, inputColor);
     fsBuilder->codeAppend(modulate.c_str());
 }
 
 void GrGLMagnifierEffect::setData(const GrGLProgramDataManager& pdman,
                                   const GrProcessor& effect) {
     const GrMagnifierEffect& zoom = effect.cast<GrMagnifierEffect>();
     pdman.set2f(fOffsetVar, zoom.x_offset(), zoom.y_offset());
     pdman.set2f(fInvZoomVar, zoom.x_inv_zoom(), zoom.y_inv_zoom());
     pdman.set2f(fInvInsetVar, zoom.x_inv_inset(), zoom.y_inv_inset());
 }
@@ skipping 184 matching lines @@
 
             int x_val = SkPin32(SkScalarFloorToInt(x_interp), 0, width - 1);
             int y_val = SkPin32(SkScalarFloorToInt(y_interp), 0, height - 1);
 
             *dptr = sptr[y_val * width + x_val];
             dptr++;
         }
     }
     return true;
 }