During image destroy, delete textures only if we have a GL context.

ui/gl/gl_image_ref_counted_memory.cc

 // Copyright 2014 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_image_ref_counted_memory.h"
 
 #include "base/logging.h"
 #include "base/memory/ref_counted_memory.h"
 
 namespace gfx {
 
 GLImageRefCountedMemory::GLImageRefCountedMemory(const gfx::Size& size,
                                                  unsigned internalformat)
     : GLImageMemory(size, internalformat) {
 }
 
 GLImageRefCountedMemory::~GLImageRefCountedMemory() {
-  Destroy();
+  DCHECK(!ref_counted_memory_);
 }
 
 bool GLImageRefCountedMemory::Initialize(
     base::RefCountedMemory* ref_counted_memory) {
   if (!HasValidFormat())
     return false;
 
   DCHECK(!ref_counted_memory_);
   ref_counted_memory_ = ref_counted_memory;
   GLImageMemory::Initialize(ref_counted_memory_->front());
   return true;
 }
 
-void GLImageRefCountedMemory::Destroy() {
-  GLImageMemory::Destroy();
+void GLImageRefCountedMemory::Destroy(bool have_context) {
+  GLImageMemory::Destroy(have_context);
   ref_counted_memory_ = NULL;
 }
 
 }  // namespace gfx