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

ui/gl/gl_image_shared_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_shared_memory.h"
 
 #include "base/logging.h"
 #include "base/process/process_handle.h"
 
 namespace gfx {
 
 GLImageSharedMemory::GLImageSharedMemory(const gfx::Size& size,
                                          unsigned internalformat)
     : GLImageMemory(size, internalformat) {
 }
 
 GLImageSharedMemory::~GLImageSharedMemory() {
-  Destroy();
+  DCHECK(!shared_memory_);
 }
 
 bool GLImageSharedMemory::Initialize(const gfx::GpuMemoryBufferHandle& handle) {
   if (!HasValidFormat())
     return false;
 
   if (!base::SharedMemory::IsHandleValid(handle.handle))
     return false;
 
   base::SharedMemory shared_memory(handle.handle, true);
@@ skipping 14 matching lines @@
     return false;
   }
 
   DCHECK(!shared_memory_);
   shared_memory_ = duped_shared_memory.Pass();
   GLImageMemory::Initialize(
       static_cast<unsigned char*>(shared_memory_->memory()));
   return true;
 }
 
-void GLImageSharedMemory::Destroy() {
-  GLImageMemory::Destroy();
+void GLImageSharedMemory::Destroy(bool have_context) {
+  GLImageMemory::Destroy(have_context);
   shared_memory_.reset();
 }
 
 }  // namespace gfx