Add glCopyTexSubImage2D to GrGLInterface

Author: bsalomon@google.com

Reviewed By: robertphillips@google.com

Review URL: https://chromiumcodereview.appspot.com/13941006

git-svn-id: http://skia.googlecode.com/svn/trunk@8634 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/gl/GrGLNoOpInterface.h b/src/gpu/gl/GrGLNoOpInterface.h
index cea2833..b04cdca 100644
--- a/src/gpu/gl/GrGLNoOpInterface.h
+++ b/src/gpu/gl/GrGLNoOpInterface.h
@@ -55,6 +55,15 @@
                                                         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);