[CacheStorage] Garbage collect unreferenced caches

content/browser/cache_storage/cache_storage_manager.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 CONTENT_BROWSER_CACHE_STORAGE_CACHE_STORAGE_MANAGER_H_
 #define CONTENT_BROWSER_CACHE_STORAGE_CACHE_STORAGE_MANAGER_H_
 
 #include <map>
 #include <string>
 
@@ skipping 65 matching lines @@
   // This must be called before creating any of the public *Cache functions
   // above.
   void SetBlobParametersForCache(
       const scoped_refptr<net::URLRequestContextGetter>& request_context_getter,
       base::WeakPtr<storage::BlobStorageContext> blob_storage_context);
 
   base::WeakPtr<CacheStorageManager> AsWeakPtr() {
     return weak_ptr_factory_.GetWeakPtr();
   }
 
+  base::FilePath root_path() const { return root_path_; }
+
  private:
   friend class CacheStorageContextImpl;
   friend class CacheStorageManagerTest;
   friend class CacheStorageMigrationTest;
   friend class CacheStorageQuotaClient;
-  friend class MigratedLegacyCacheDirectoryNameTest;
 
   typedef std::map<GURL, CacheStorage*> CacheStorageMap;
 
   CacheStorageManager(
       const base::FilePath& path,
       const scoped_refptr<base::SequencedTaskRunner>& cache_task_runner,
       const scoped_refptr<storage::QuotaManagerProxy>& quota_manager_proxy);
 
   // The returned CacheStorage* is owned by this manager.
   CacheStorage* FindOrCreateCacheStorage(const GURL& origin);
@@ skipping 13 matching lines @@
   static void DeleteOriginDidClose(
       const GURL& origin,
       const storage::QuotaClient::DeletionCallback& callback,
       scoped_ptr<CacheStorage> cache_storage,
       base::WeakPtr<CacheStorageManager> cache_manager);
 
   scoped_refptr<net::URLRequestContextGetter> url_request_context_getter()
       const {
     return request_context_getter_;
   }
+
   base::WeakPtr<storage::BlobStorageContext> blob_storage_context() const {
     return blob_context_;
   }
-  base::FilePath root_path() const { return root_path_; }
+
   const scoped_refptr<base::SequencedTaskRunner>& cache_task_runner() const {
     return cache_task_runner_;
   }
 
   bool IsMemoryBacked() const { return root_path_.empty(); }
 
   // Map a origin to the path. Exposed for testing.
   static base::FilePath ConstructLegacyOriginPath(
       const base::FilePath& root_path,
       const GURL& origin);
@@ skipping 16 matching lines @@
   scoped_refptr<net::URLRequestContextGetter> request_context_getter_;
   base::WeakPtr<storage::BlobStorageContext> blob_context_;
 
   base::WeakPtrFactory<CacheStorageManager> weak_ptr_factory_;
   DISALLOW_COPY_AND_ASSIGN(CacheStorageManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_CACHE_STORAGE_CACHE_STORAGE_MANAGER_H_