Add IndexedDBValue wrapper class to group blob info with bits.

content/browser/indexed_db/indexed_db_callbacks.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_INDEXED_DB_INDEXED_DB_CALLBACKS_H_
 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CALLBACKS_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "content/browser/indexed_db/indexed_db_database_error.h"
 #include "content/browser/indexed_db/indexed_db_dispatcher_host.h"
 #include "content/common/indexed_db/indexed_db_key.h"
 #include "content/common/indexed_db/indexed_db_key_path.h"
 #include "url/gurl.h"
 
 namespace content {
 class IndexedDBConnection;
 class IndexedDBCursor;
 class IndexedDBDatabase;
 class IndexedDBDatabaseCallbacks;
 struct IndexedDBDatabaseMetadata;
+struct IndexedDBValue;
 
 class CONTENT_EXPORT IndexedDBCallbacks
     : public base::RefCounted<IndexedDBCallbacks> {
  public:
   // Simple payload responses
   IndexedDBCallbacks(IndexedDBDispatcherHost* dispatcher_host,
                      int32 ipc_thread_id,
                      int32 ipc_callbacks_id);
 
   // IndexedDBCursor responses
@@ skipping 25 matching lines @@
       int64 old_version,
       scoped_ptr<IndexedDBConnection> connection,
       const content::IndexedDBDatabaseMetadata& metadata);
   virtual void OnSuccess(scoped_ptr<IndexedDBConnection> connection,
                          const content::IndexedDBDatabaseMetadata& metadata);
 
   // IndexedDBDatabase::OpenCursor
   virtual void OnSuccess(scoped_refptr<IndexedDBCursor> cursor,
                          const IndexedDBKey& key,
                          const IndexedDBKey& primary_key,
-                         std::string* value);
+                         IndexedDBValue* value);
 
   // IndexedDBCursor::Continue / Advance
   virtual void OnSuccess(const IndexedDBKey& key,
                          const IndexedDBKey& primary_key,
-                         std::string* value);
+                         IndexedDBValue* value);
 
   // IndexedDBCursor::PrefetchContinue
   virtual void OnSuccessWithPrefetch(
       const std::vector<IndexedDBKey>& keys,
       const std::vector<IndexedDBKey>& primary_keys,
-      const std::vector<std::string>& values);
+      const std::vector<IndexedDBValue>& values);
 
   // IndexedDBDatabase::Get (with key injection)
-  virtual void OnSuccess(std::string* data,
+  virtual void OnSuccess(IndexedDBValue* value,
                          const IndexedDBKey& key,
                          const IndexedDBKeyPath& key_path);
 
   // IndexedDBDatabase::Get
-  virtual void OnSuccess(std::string* value);
+  virtual void OnSuccess(IndexedDBValue* value);
 
   // IndexedDBDatabase::Put / IndexedDBCursor::Update
-  virtual void OnSuccess(const IndexedDBKey& value);
+  virtual void OnSuccess(const IndexedDBKey& key);
 
   // IndexedDBDatabase::Count
   virtual void OnSuccess(int64 value);
 
   // IndexedDBDatabase::Delete
   // IndexedDBCursor::Continue / Advance (when complete)
   virtual void OnSuccess();
 
   blink::WebIDBDataLoss data_loss() const { return data_loss_; }
 
@@ skipping 18 matching lines @@
   int32 ipc_database_callbacks_id_;
 
   // Stored in OnDataLoss, merged with OnUpgradeNeeded response.
   blink::WebIDBDataLoss data_loss_;
   std::string data_loss_message_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CALLBACKS_H_