Add glCopyTexSubImage2D to GrGLInterface

src/gpu/gl/unix/GrGLCreateNativeInterface_unix.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "gl/GrGLExtensions.h"
@@ skipping 48 matching lines @@
         }
 
         GR_GL_GET_PROC(BufferData);
         GR_GL_GET_PROC(BufferSubData);
         interface->fClear = glClear;
         interface->fClearColor = glClearColor;
         interface->fClearStencil = glClearStencil;
         interface->fColorMask = glColorMask;
         GR_GL_GET_PROC(CompileShader);
         interface->fCompressedTexImage2D = glCompressedTexImage2D;
+        interface->fCopyTexSubImage2D = glCopyTexSubImage2D;
         GR_GL_GET_PROC(CreateProgram);
         GR_GL_GET_PROC(CreateShader);
         interface->fCullFace = glCullFace;
         GR_GL_GET_PROC(DeleteBuffers);
         GR_GL_GET_PROC(DeleteProgram);
         GR_GL_GET_PROC(DeleteQueries);
         GR_GL_GET_PROC(DeleteShader);
         interface->fDeleteTextures = glDeleteTextures;
         interface->fDepthMask = glDepthMask;
         interface->fDisable = glDisable;
@@ skipping 133 matching lines @@
             delete interface;
             return NULL;
         }
         interface->fBindingsExported = kDesktop_GrGLBinding;
 
         return interface;
     } else {
         return NULL;
     }
 }