IndexedDB: chromium side of IDBCursor.advance().

content/common/indexed_db/proxy_webidbcursor_impl.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_COMMON_INDEXED_DB_PROXY_WEBIDBCURSOR_IMPL_H_
 #define CONTENT_COMMON_INDEXED_DB_PROXY_WEBIDBCURSOR_IMPL_H_
 
 #include <deque>
 
 #include "base/basictypes.h"
 #include "content/common/indexed_db/indexed_db_key.h"
 #include "content/public/common/serialized_script_value.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBCallbacks.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBCursor.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBKey.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebSerializedScriptValue.h"
 
 class RendererWebIDBCursorImpl : public WebKit::WebIDBCursor {
  public:
   RendererWebIDBCursorImpl(int32 idb_cursor_id);
   virtual ~RendererWebIDBCursorImpl();
 
   virtual unsigned short direction() const;
   virtual WebKit::WebIDBKey key() const;
   virtual WebKit::WebIDBKey primaryKey() const;
   virtual WebKit::WebSerializedScriptValue value() const;
   virtual void update(const WebKit::WebSerializedScriptValue& value,
                       WebKit::WebIDBCallbacks* callback,
                       WebKit::WebExceptionCode& ec);
+  virtual void advance(unsigned long count,
+                       WebKit::WebIDBCallbacks* callback,
+                       WebKit::WebExceptionCode& ec);
   virtual void continueFunction(const WebKit::WebIDBKey& key,
                                 WebKit::WebIDBCallbacks* callback,
                                 WebKit::WebExceptionCode& ec);
   virtual void deleteFunction(WebKit::WebIDBCallbacks* callback,
                               WebKit::WebExceptionCode& ec);
   virtual void postSuccessHandlerCallback();
 
   void SetKeyAndValue(const IndexedDBKey& key, const IndexedDBKey& primary_key,
                       const content::SerializedScriptValue& value);
   void SetPrefetchData(
@@ skipping 26 matching lines @@
 
   // Number of items to request in next prefetch.
   int prefetch_amount_;
 
   enum { kPrefetchContinueThreshold = 2 };
   enum { kMinPrefetchAmount = 5 };
   enum { kMaxPrefetchAmount = 100 };
 };
 
 #endif  // CONTENT_COMMON_INDEXED_DB_PROXY_WEBIDBCURSOR_IMPL_H_