The chromium-side backchannel plumbing for blobs in IDB.

content/child/indexed_db/webidbcursor_impl.h

 // Copyright 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.
 
 #ifndef CONTENT_CHILD_INDEXED_DB_PROXY_WEBIDBCURSOR_IMPL_H_
 #define CONTENT_CHILD_INDEXED_DB_PROXY_WEBIDBCURSOR_IMPL_H_
 
 #include <deque>
 #include <vector>
 
@@ skipping 20 matching lines @@
   virtual ~WebIDBCursorImpl();
 
   virtual void advance(unsigned long count, blink::WebIDBCallbacks* callback);
   virtual void continueFunction(const blink::WebIDBKey& key,
                                 blink::WebIDBCallbacks* callback);
   virtual void continueFunction(const blink::WebIDBKey& key,
                                 const blink::WebIDBKey& primary_key,
                                 blink::WebIDBCallbacks* callback);
   virtual void postSuccessHandlerCallback();
 
-  void SetPrefetchData(const std::vector<IndexedDBKey>& keys,
-                       const std::vector<IndexedDBKey>& primary_keys,
-                       const std::vector<blink::WebData>& values);
+  void SetPrefetchData(
+      const std::vector<IndexedDBKey>& keys,
+      const std::vector<IndexedDBKey>& primary_keys,
+      const std::vector<blink::WebData>& values,
+      const std::vector<blink::WebVector<blink::WebBlobInfo> >& blob_info);
 
   void CachedAdvance(unsigned long count, blink::WebIDBCallbacks* callbacks);
   void CachedContinue(blink::WebIDBCallbacks* callbacks);
 
   // This method is virtual so it can be overridden in unit tests.
   virtual void ResetPrefetchCache();
 
   int64 transaction_id() const { return transaction_id_; }
 
  private:
   FRIEND_TEST_ALL_PREFIXES(IndexedDBDispatcherTest, CursorReset);
   FRIEND_TEST_ALL_PREFIXES(IndexedDBDispatcherTest, CursorTransactionId);
   FRIEND_TEST_ALL_PREFIXES(WebIDBCursorImplTest, AdvancePrefetchTest);
   FRIEND_TEST_ALL_PREFIXES(WebIDBCursorImplTest, PrefetchReset);
   FRIEND_TEST_ALL_PREFIXES(WebIDBCursorImplTest, PrefetchTest);
 
   int32 ipc_cursor_id_;
   int64 transaction_id_;
 
   // Prefetch cache.
   std::deque<IndexedDBKey> prefetch_keys_;
   std::deque<IndexedDBKey> prefetch_primary_keys_;
   std::deque<blink::WebData> prefetch_values_;
+  std::deque<blink::WebVector<blink::WebBlobInfo> > prefetch_blob_info_;
 
   // Number of continue calls that would qualify for a pre-fetch.
   int continue_count_;
 
   // Number of items used from the last prefetch.
   int used_prefetches_;
 
   // Number of onsuccess handlers we are waiting for.
   int pending_onsuccess_callbacks_;
 
   // Number of items to request in next prefetch.
   int prefetch_amount_;
 
   scoped_refptr<ThreadSafeSender> thread_safe_sender_;
 
   enum { kInvalidCursorId = -1 };
   enum { kPrefetchContinueThreshold = 2 };
   enum { kMinPrefetchAmount = 5 };
   enum { kMaxPrefetchAmount = 100 };
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_INDEXED_DB_PROXY_WEBIDBCURSOR_IMPL_H_