ServiceWorker: Use SimpleCache for the script cache

content/browser/appcache/appcache_disk_cache.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 CONTENT_BROWSER_APPCACHE_APPCACHE_DISK_CACHE_H_
 #define CONTENT_BROWSER_APPCACHE_APPCACHE_DISK_CACHE_H_
 
 #include <set>
 #include <vector>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/browser/appcache/appcache_response.h"
 #include "content/common/content_export.h"
 #include "net/disk_cache/disk_cache.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 }  // namespace base
 
 namespace content {
 
 // An implementation of AppCacheDiskCacheInterface that
 // uses net::DiskCache as the backing store.
 class CONTENT_EXPORT AppCacheDiskCache
     : public AppCacheDiskCacheInterface {
  public:
   AppCacheDiskCache();

[michaeln, 2015/05/14 23:35:26]

might be cleaner to provide a second protected ctor that takes the param instead
of exposing the datamember as protected and expecting derivatives to set it in
their ctor

[nhiroki, 2015/05/15 02:12:51]

Done.

   ~AppCacheDiskCache() override;
 
   // Initializes the object to use disk backed storage.
   int InitWithDiskBackend(
       const base::FilePath& disk_cache_directory,
       int disk_cache_size,
       bool force,
       const scoped_refptr<base::SingleThreadTaskRunner>& cache_thread,
       const net::CompletionCallback& callback);
 
   // Initializes the object to use memory only storage.
   // This is used for Chrome's incognito browsing.
   int InitWithMemBackend(int disk_cache_size,
                          const net::CompletionCallback& callback);
 
   void Disable();
   bool is_disabled() const { return is_disabled_; }
 
   int CreateEntry(int64 key,
                   Entry** entry,
                   const net::CompletionCallback& callback) override;
   int OpenEntry(int64 key,
                 Entry** entry,
                 const net::CompletionCallback& callback) override;
   int DoomEntry(int64 key, const net::CompletionCallback& callback) override;
 
+ protected:
+  bool use_simple_cache_ = false;
+
  private:
   class CreateBackendCallbackShim;
   class EntryImpl;
 
   // PendingCalls allow CreateEntry, OpenEntry, and DoomEntry to be called
   // immediately after construction, without waiting for the
   // underlying disk_cache::Backend to be fully constructed. Early
   // calls are queued up and serviced once the disk_cache::Backend is
   // really ready to go.
   enum PendingCallType {
@@ skipping 41 matching lines @@
   scoped_refptr<CreateBackendCallbackShim> create_backend_callback_;
   PendingCalls pending_calls_;
   ActiveCalls active_calls_;
   OpenEntries open_entries_;
   scoped_ptr<disk_cache::Backend> disk_cache_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_APPCACHE_APPCACHE_DISK_CACHE_H_