Fix crash when using surfaceless EGL on Android

android_webview/browser/aw_gl_surface.h

 // 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.
 
 #ifndef ANDROID_WEBVIEW_BROWSER_AW_GL_SURFACE_H_
 #define ANDROID_WEBVIEW_BROWSER_AW_GL_SURFACE_H_
 
 #include "ui/gl/gl_surface.h"
 
 namespace android_webview {
 
 // This surface is used to represent the underlying surface provided by the App
 // inside a hardware draw. Note that offscreen contexts will not be using this
 // GLSurface.
 class GL_EXPORT AwGLSurface : public gfx::GLSurface {
  public:
   AwGLSurface();
 
   // Implement GLSurface.
   virtual void Destroy() OVERRIDE;
   virtual bool IsOffscreen() OVERRIDE;
   virtual unsigned int GetBackingFrameBufferObject() OVERRIDE;
   virtual bool SwapBuffers() OVERRIDE;
   virtual gfx::Size GetSize() OVERRIDE;
   virtual void* GetHandle() OVERRIDE;
+  virtual bool RepresentsNonOwnedSurface() OVERRIDE;
   virtual void* GetDisplay() OVERRIDE;
 
   void SetBackingFrameBufferObject(unsigned int fbo);
   void ResetBackingFrameBufferObject();
 
  protected:
   virtual ~AwGLSurface();
 
  private:
   unsigned int fbo_;
 
   DISALLOW_COPY_AND_ASSIGN(AwGLSurface);
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_AW_GL_SURFACE_H_