Android webview fix gpu crashes after destroy

ui/gl/gl_context.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 <string>
 
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/threading/thread_local.h"
@@ skipping 103 matching lines @@
   }
 }
 
 bool GLContext::MakeVirtuallyCurrent(
     GLContext* virtual_context, GLSurface* surface) {
   DCHECK(virtual_gl_api_);
   return virtual_gl_api_->MakeCurrent(virtual_context, surface);
 }
 
 void GLContext::OnDestroyVirtualContext(GLContext* virtual_context) {
-  DCHECK(virtual_gl_api_);
-  virtual_gl_api_->OnDestroyVirtualContext(virtual_context);
+  if (virtual_gl_api_)
+    virtual_gl_api_->OnDestroyVirtualContext(virtual_context);

[no sievers, 2013/01/25 20:24:41]

This change looks correct for where GLContextVirtual::Initialize() fails.

But see other comment... how does this happen?

[boliu, 2013/01/25 21:27:02]

Crash stack for this is in the bug.

 }
 
 void GLContext::SetRealGLApi() {
   SetGLToRealGLApi();
 }
 
 }  // namespace gfx