Plumbed in discard_framebuffer extension

https://codereview.chromium.org/14461006/



git-svn-id: http://skia.googlecode.com/svn/trunk@8906 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/gl/GrGLNoOpInterface.h b/src/gpu/gl/GrGLNoOpInterface.h
index b04cdca..3002c07 100644
--- a/src/gpu/gl/GrGLNoOpInterface.h
+++ b/src/gpu/gl/GrGLNoOpInterface.h
@@ -159,6 +159,10 @@
                                                 GrGLsizei width,
                                                 GrGLsizei height);
 
+GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDiscardFramebuffer(GrGLenum target, 
+                                                      GrGLsizei numAttachments, 
+                                                      const GrGLenum* attachments);
+
 GrGLvoid GR_GL_FUNCTION_TYPE noOpGLTexSubImage2D(GrGLenum target,
                                                  GrGLint level,
                                                  GrGLint xoffset,