Wrap large IndexedDB values into Blobs before writing to LevelDB.

third_party/WebKit/Source/modules/indexeddb/IDBRequest.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 11 matching lines @@
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef IDBRequest_h
 #define IDBRequest_h
 
+#include <memory>
 #include "bindings/core/v8/ActiveScriptWrappable.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "bindings/core/v8/ScriptValue.h"
 #include "core/dom/DOMStringList.h"
 #include "core/dom/SuspendableObject.h"
 #include "core/events/EventListener.h"
 #include "core/events/EventTarget.h"
 #include "modules/EventModules.h"
 #include "modules/ModulesExport.h"
 #include "modules/indexeddb/IDBAny.h"
+#include "modules/indexeddb/IDBRequestLoader.h"
 #include "modules/indexeddb/IDBTransaction.h"
 #include "modules/indexeddb/IndexedDB.h"
 #include "platform/blob/BlobData.h"
 #include "platform/heap/Handle.h"
 #include "public/platform/WebBlobInfo.h"
 #include "public/platform/modules/indexeddb/WebIDBCursor.h"
 #include "public/platform/modules/indexeddb/WebIDBTypes.h"
-#include <memory>
 
 namespace blink {
 
 class DOMException;
 class ExceptionState;
 class IDBCursor;
 struct IDBDatabaseMetadata;
+class IDBRequestLoader;
 class IDBValue;
 
 class MODULES_EXPORT IDBRequest : public EventTargetWithInlineData,
                                   public ActiveScriptWrappable<IDBRequest>,
                                   public SuspendableObject {
   DEFINE_WRAPPERTYPEINFO();
   USING_GARBAGE_COLLECTED_MIXIN(IDBRequest);
 
  public:
   static IDBRequest* Create(ScriptState*, IDBAny* source, IDBTransaction*);
@@ skipping 113 matching lines @@
   WebIDBCursorDirection cursor_direction_ = kWebIDBCursorDirectionNext;
   // When a cursor is continued/advanced, m_result is cleared and
   // m_pendingCursor holds it.
   Member<IDBCursor> pending_cursor_;
   // New state is not applied to the cursor object until the event is
   // dispatched.
   Member<IDBKey> cursor_key_;
   Member<IDBKey> cursor_primary_key_;
   RefPtr<IDBValue> cursor_value_;
 
+  // Used to unwrap Blob-wrapped IDBValues.
+  Member<IDBRequestLoader> loader_;
+
   bool did_fire_upgrade_needed_event_ = false;
   bool prevent_propagation_ = false;
   bool result_dirty_ = true;
 
   // Transactions should be aborted after event dispatch if an exception was
   // not caught. This is cleared before dispatch, set by a call to
   // uncaughtExceptionInEventHandler() during dispatch, and checked afterwards
   // to abort if necessary.
   bool did_throw_in_event_handler_ = false;
 
   // Pointer back to the WebIDBCallbacks that holds a persistent reference to
   // this object.
   WebIDBCallbacks* web_callbacks_ = nullptr;
 };
 
 }  // namespace blink
 
 #endif  // IDBRequest_h