Change the API of disk_cache::CreateCacheBackend to use scoped_ptr

content/browser/gpu/shader_disk_cache.cc

 // Copyright (c) 2013 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 "content/browser/gpu/shader_disk_cache.h"
 
 #include "base/threading/thread_checker.h"
 #include "content/browser/gpu/gpu_process_host.h"
 #include "content/public/browser/browser_thread.h"
 #include "gpu/command_buffer/common/constants.h"
@@ skipping 489 matching lines @@
     return;
   }
 
   shader_clear_map_.erase(path);
 }
 
 ShaderDiskCache::ShaderDiskCache(const base::FilePath& cache_path)
     : cache_available_(false),
       host_id_(0),
       cache_path_(cache_path),
-      is_initialized_(false),
-      backend_(NULL) {
+      is_initialized_(false) {
   ShaderCacheFactory::GetInstance()->AddToCache(cache_path_, this);
 }
 
 ShaderDiskCache::~ShaderDiskCache() {
   ShaderCacheFactory::GetInstance()->RemoveFromCache(cache_path_);
-  if (backend_)
-    delete backend_;
 }
 
 void ShaderDiskCache::Init() {
   if (is_initialized_) {
     NOTREACHED();  // can't initialize disk cache twice.
     return;
   }
   is_initialized_ = true;
 
   int rv = disk_cache::CreateCacheBackend(
@@ skipping 82 matching lines @@
     const net::CompletionCallback& callback) {
   if (entry_map_.empty()) {
     return net::OK;
   }
   cache_complete_callback_ = callback;
   return net::ERR_IO_PENDING;
 }
 
 }  // namespace content