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.cpp b/src/gpu/gl/GrGLNoOpInterface.cpp
index 82e7a1b..f61fa55 100644
--- a/src/gpu/gl/GrGLNoOpInterface.cpp
+++ b/src/gpu/gl/GrGLNoOpInterface.cpp
@@ -238,6 +238,11 @@
                                                 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,