Add glCopyTexSubImage2D to GrGLInterface

src/gpu/gl/GrGLNoOpInterface.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGLNoOpInterface_DEFINED
 #define GrGLNoOpInterface_DEFINED
 
@@ skipping 37 matching lines @@
 
 GrGLvoid GR_GL_FUNCTION_TYPE noOpGLCompressedTexImage2D(GrGLenum target,
                                                         GrGLint level,
                                                         GrGLenum internalformat,
                                                         GrGLsizei width,
                                                         GrGLsizei height,
                                                         GrGLint border,
                                                         GrGLsizei imageSize,
                                                         const GrGLvoid* data);
 
+GrGLvoid GR_GL_FUNCTION_TYPE noOpGLCopyTexSubImage2D(GrGLenum target,
+                                                     GrGLint level,
+                                                     GrGLint xoffset,
+                                                     GrGLint yoffset,
+                                                     GrGLint x,
+                                                     GrGLint y,
+                                                     GrGLsizei width,
+                                                     GrGLsizei height);
+
 GrGLvoid GR_GL_FUNCTION_TYPE noOpGLCullFace(GrGLenum mode);
 
 GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDepthMask(GrGLboolean flag);
 
 GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDisable(GrGLenum cap);
 
 GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDisableVertexAttribArray(GrGLuint index);
 
 GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDrawArrays(GrGLenum mode, GrGLint first, GrGLsizei count);
 
@@ skipping 270 matching lines @@
 const GrGLubyte* GR_GL_FUNCTION_TYPE noOpGLGetStringi(GrGLenum name, GrGLuint i);
 
 GrGLvoid GR_GL_FUNCTION_TYPE noOpGLGetTexLevelParameteriv(GrGLenum target,
                                                           GrGLint level,
                                                           GrGLenum pname,
                                                           GrGLint* params);
 
 GrGLint GR_GL_FUNCTION_TYPE noOpGLGetUniformLocation(GrGLuint program, const char* name);
 
 #endif