Remove tab parameter from GrGLSLMulVarBy4f function

src/gpu/gl/GrGLSL.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGLSL_DEFINED
 #define GrGLSL_DEFINED
 
@@ skipping 292 matching lines @@
     friend GrGLSLExpr4 operator+(const GrGLSLExpr4& in0, const GrGLSLExpr4&in1);
     friend GrGLSLExpr4 operator-(const GrGLSLExpr4& in0, const GrGLSLExpr4&in1);
 
     friend class GrGLSLExpr<GrGLSLExpr4>;
 
     typedef GrGLSLExpr<GrGLSLExpr4> INHERITED;
 };
 
 /**
  * Does an inplace mul, *=, of vec4VarName by mulFactor.
- * A semicolon and newline are added after the assignment.
+ * A semicolon is added after the assignment.
  */
-void GrGLSLMulVarBy4f(SkString* outAppend, unsigned tabCnt,
-                      const char* vec4VarName, const GrGLSLExpr4& mulFactor);
+void GrGLSLMulVarBy4f(SkString* outAppend, const char* vec4VarName, const GrGLSLExpr4& mulFactor);
 
 #include "GrGLSL_impl.h"
 
 #endif