Fix crash when using surfaceless EGL on Android

android_webview/browser/aw_gl_surface.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "android_webview/browser/aw_gl_surface.h"
 
 namespace android_webview {
 
 AwGLSurface::AwGLSurface() : fbo_(0) {}
 
@@ skipping 15 matching lines @@
 }
 
 gfx::Size AwGLSurface::GetSize() {
   return gfx::Size(1, 1);
 }
 
 void* AwGLSurface::GetHandle() {
   return NULL;
 }
 
+bool AwGLSurface::RepresentsNonOwnedSurface() {
+  return true;
+}
+
 void* AwGLSurface::GetDisplay() {
   return NULL;
 }
 
 void AwGLSurface::SetBackingFrameBufferObject(unsigned int fbo) {
   fbo_ = fbo;
 }
 
 void AwGLSurface::ResetBackingFrameBufferObject() {
   fbo_ = 0;
 }
 
 }  // namespace android_webview