Remove GLImage::Destroy().

ui/gl/gl_image_shared_memory.h

 // 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.
 
 #ifndef UI_GL_GL_IMAGE_SHARED_MEMORY_H_
 #define UI_GL_GL_IMAGE_SHARED_MEMORY_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 15 matching lines @@
  public:
   GLImageSharedMemory(const gfx::Size& size, unsigned internalformat);
 
   bool Initialize(const base::SharedMemoryHandle& handle,
                   gfx::GenericSharedMemoryId shared_memory_id,
                   gfx::BufferFormat format,
                   size_t offset,
                   size_t stride);
 
   // Overridden from GLImage:
-  void Destroy(bool have_context) override;
   void OnMemoryDump(base::trace_event::ProcessMemoryDump* pmd,
                     uint64_t process_tracing_id,
                     const std::string& dump_name) override;
 
  protected:
   ~GLImageSharedMemory() override;
 
  private:
   std::unique_ptr<base::SharedMemory> shared_memory_;
   gfx::GenericSharedMemoryId shared_memory_id_;
 
   DISALLOW_COPY_AND_ASSIGN(GLImageSharedMemory);
 };
 
 }  // namespace gl
 
 #endif  // UI_GL_GL_IMAGE_SHARED_MEMORY_H_