Android webview fix gpu crashes after destroy

ui/gl/gl_surface_egl.cc

 // Copyright (c) 2012 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 "ui/gl/gl_surface_egl.h"
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "build/build_config.h"
@@ skipping 206 matching lines @@
     : window_(window),
       surface_(NULL),
       supports_post_sub_buffer_(false),
       config_(NULL) {
   software_ = software;
 }
 
 bool NativeViewGLSurfaceEGL::Initialize() {
   DCHECK(!surface_);
 
+  if (!window_) {

[no sievers, 2013/01/28 20:55:06]

if (window_ == kNullAcceleratedWidget)

+    LOG(ERROR) << "Trying to create surface without window.";
+    return false;
+  }
+
   if (!GetDisplay()) {
     LOG(ERROR) << "Trying to create surface with invalid display.";
     return false;
   }
 
   static const EGLint egl_window_attributes_sub_buffer[] = {
     EGL_POST_SUB_BUFFER_SUPPORTED_NV, EGL_TRUE,
     EGL_NONE
   };
 
@@ skipping 316 matching lines @@
 
   return handle;
 #endif
 }
 
 PbufferGLSurfaceEGL::~PbufferGLSurfaceEGL() {
   Destroy();
 }
 
 }  // namespace gfx