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

gpu/command_buffer/service/image_manager.h

 // 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.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_IMAGE_MANAGER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_IMAGE_MANAGER_H_
 
 #include "base/basictypes.h"
 #include "base/containers/hash_tables.h"
 #include "base/memory/ref_counted.h"
 #include "gpu/gpu_export.h"
 
 namespace gfx {
 class GLImage;
 }
 
 namespace gpu {
 namespace gles2 {
 
 // This class keeps track of the images and their state.
 class GPU_EXPORT ImageManager {
  public:
   ImageManager();
   ~ImageManager();
 
-  void AddImage(gfx::GLImage* image, int32 service_id);
-  void RemoveImage(int32 service_id);
+  void Destroy(bool have_context);
+  bool AddImage(gfx::GLImage* image, int32 service_id);
+  bool RemoveImage(int32 service_id);

[no sievers, 2014/07/30 12:34:08]

I'd leave RemoveImage() as returning void

[sohanjg, 2014/07/30 13:08:02]

Done.

   gfx::GLImage* LookupImage(int32 service_id);
 
  private:
-  typedef base::hash_map<uint32, scoped_refptr<gfx::GLImage> > GLImageMap;
+  typedef base::hash_map<int32, scoped_refptr<gfx::GLImage> > GLImageMap;
   GLImageMap images_;
 
   DISALLOW_COPY_AND_ASSIGN(ImageManager);
 };
 
 }  // namespage gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_IMAGE_MANAGER_H_