Implement the ability to obliterate a storage partition from disk.

content/browser/storage_partition_impl_map.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_STORAGE_PARTITION_MAP_H_
 #define CONTENT_BROWSER_STORAGE_PARTITION_MAP_H_
 
 #include <map>
 #include <string>
 
@@ skipping 14 matching lines @@
  public:
   explicit StoragePartitionImplMap(BrowserContext* browser_context);
 
   virtual ~StoragePartitionImplMap();
 
   // This map retains ownership of the returned StoragePartition objects.
   StoragePartitionImpl* Get(const std::string& partition_domain,
                             const std::string& partition_name,
                             bool in_memory);
 
+  // Starts an asynchronous best-effort attempt to delete all on-disk storage
+  // related to |site|, avoiding any directories that are in use by
+  // |partition_map|.

[Charlie Reis, 2012/11/16 01:45:10]

nit: There's no |partition_map| here.  Can you clarify?

[awong, 2012/11/16 02:56:10]

Was referring to current object.  Just removed that chunk since it's implied by
being a method.

+  void AsyncObliterate(const GURL& site);
+
   void ForEach(const BrowserContext::StoragePartitionCallback& callback);
 
  private:
   FRIEND_TEST_ALL_PREFIXES(StoragePartitionConfigTest, OperatorLess);
 
   // Each StoragePartition is uniquely identified by which partition domain
   // it belongs to (such as an app or the browser itself), the user supplied
   // partition name and the bit indicating whether it should be persisted on
   // disk or not. This structure contains those elements and is used as
   // uniqueness key to lookup StoragePartition objects in the global map.
@@ skipping 41 matching lines @@
   // |partition_domain| and |partition_name|.
   static FilePath GetStoragePartitionPath(const std::string& partition_domain,
                                           const std::string& partition_name);
 
   // This must always be called *after* |partition| has been added to the
   // partitions_.
   //
   // TODO(ajwong): Is there a way to make it so that Get()'s implementation
   // doesn't need to be aware of this ordering?  Revisit when refactoring
   // ResourceContext and AppCache to respect storage partitions.
-  void PostCreateInitialization(StoragePartitionImpl* partition);
+  void PostCreateInitialization(StoragePartitionImpl* partition,
+                                bool in_memory);
 
   BrowserContext* browser_context_;  // Not Owned.
   PartitionMap partitions_;
 
   // Set to true when the ResourceContext for the associated |browser_context_|
   // is initialized. Can never return to false.
   bool resource_context_initialized_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_STORAGE_PARTITION_MAP_H_