Add GL_ARB_invalidate_subdata functions to GrGLInterface.

src/gpu/gl/iOS/GrGLCreateNativeInterface_iOS.cpp

Index: src/gpu/gl/iOS/GrGLCreateNativeInterface_iOS.cpp
diff --git a/src/gpu/gl/iOS/GrGLCreateNativeInterface_iOS.cpp b/src/gpu/gl/iOS/GrGLCreateNativeInterface_iOS.cpp
index decc23498c1d8680793392813a5e8907de9b21e5..553831d6eff6b3369a56942c6ed7fffeb9147113 100644
--- a/src/gpu/gl/iOS/GrGLCreateNativeInterface_iOS.cpp
+++ b/src/gpu/gl/iOS/GrGLCreateNativeInterface_iOS.cpp
@@ -150,6 +150,18 @@ const GrGLInterface* GrGLCreateNativeInterface() {
     functions->fPopGroupMarker = glPopGroupMarkerEXT;
 #endif
 
+#if GL_ES_VERSION_3_0 || GL_ARB_invalidate_subdata
+    functions->fInvalidateFramebuffer = glInvalidateFramebuffer;
+    functions->fInvalidateSubFramebuffer = glInvalidateSubFramebuffer;
+#endif
+
+#if GL_ARB_invalidate_subdata
+    functions->fInvalidateBufferData = glInvalidateBufferData;
+    functions->fInvalidateBufferSubData = glInvalidateBufferSubData;
+    functions->fInvalidateTexImage = glInvalidateTexImage;
+    functions->fInvalidateTexSubImage = glInvalidateTexSubImage;
+#endif
+
     interface->fStandard = kGLES_GrGLStandard;
     interface->fExtensions.init(kGLES_GrGLStandard, glGetString, NULL, glGetIntegerv);