Add counting of some GL calls

src/gpu/gl/builders/GrGLShaderStringBuilder.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGLShaderStringBuilder_DEFINED
 #define GrGLShaderStringBuilder_DEFINED
 
 #include "GrAllocator.h"
 #include "gl/GrGLContext.h"
 #include "SkTypes.h"
 
-GrGLuint GrGLCompileAndAttachShader(const GrGLContext& glCtx,
+class GrGpuGL;
+
+GrGLuint GrGLCompileAndAttachShader(GrGpuGL* gpu,
                                     GrGLuint programId,
                                     GrGLenum type,
                                     const SkString& shaderSrc);
 
 #endif