Remove GLImage::Destroy().

ui/gl/gl_image_surface_texture.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_surface_texture.h"
 
 #include "base/trace_event/trace_event.h"
 #include "ui/gl/android/surface_texture.h"
 
 namespace gl {
 
 GLImageSurfaceTexture::GLImageSurfaceTexture(const gfx::Size& size)
     : size_(size), texture_id_(0) {}
 
 GLImageSurfaceTexture::~GLImageSurfaceTexture() {
   DCHECK(thread_checker_.CalledOnValidThread());
-  DCHECK(!surface_texture_.get());
-  DCHECK_EQ(0, texture_id_);
 }
 
 bool GLImageSurfaceTexture::Initialize(SurfaceTexture* surface_texture) {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK(!surface_texture_.get());
   surface_texture_ = surface_texture;
   return true;
 }
 
-void GLImageSurfaceTexture::Destroy(bool have_context) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  surface_texture_ = NULL;
-  texture_id_ = 0;
-}
-
 gfx::Size GLImageSurfaceTexture::GetSize() {
   return size_;
 }
 
 unsigned GLImageSurfaceTexture::GetInternalFormat() { return GL_RGBA; }
 
 bool GLImageSurfaceTexture::BindTexImage(unsigned target) {
   TRACE_EVENT0("gpu", "GLImageSurfaceTexture::BindTexImage");
   DCHECK(thread_checker_.CalledOnValidThread());
 
@@ skipping 55 matching lines @@
 }
 
 void GLImageSurfaceTexture::OnMemoryDump(
     base::trace_event::ProcessMemoryDump* pmd,
     uint64_t process_tracing_id,
     const std::string& dump_name) {
   // TODO(ericrk): Add OnMemoryDump for GLImages. crbug.com/514914
 }
 
 }  // namespace gl