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.cpp b/src/gpu/gl/GrGLNoOpInterface.cpp
index 8f753ec..82e7a1b 100644
--- a/src/gpu/gl/GrGLNoOpInterface.cpp
+++ b/src/gpu/gl/GrGLNoOpInterface.cpp
@@ -100,6 +100,16 @@
                                                         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) {
 }