Wrap large IndexedDB values into Blobs before writing to LevelDB.

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

Index: third_party/WebKit/Source/modules/indexeddb/IDBRequest.h
diff --git a/third_party/WebKit/Source/modules/indexeddb/IDBRequest.h b/third_party/WebKit/Source/modules/indexeddb/IDBRequest.h
index 80ad1354c464a66da3832f8f29f7b74a9a6361e0..084beabc5bb47c12c1841a250bc34625791b3a2f 100644
--- a/third_party/WebKit/Source/modules/indexeddb/IDBRequest.h
+++ b/third_party/WebKit/Source/modules/indexeddb/IDBRequest.h
@@ -29,6 +29,7 @@
 #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"
@@ -39,6 +40,7 @@
 #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"
@@ -46,7 +48,6 @@
 #include "public/platform/WebBlobInfo.h"
 #include "public/platform/modules/indexeddb/WebIDBCursor.h"
 #include "public/platform/modules/indexeddb/WebIDBTypes.h"
-#include <memory>
 
 namespace blink {
 
@@ -54,6 +55,7 @@ class DOMException;
 class ExceptionState;
 class IDBCursor;
 struct IDBDatabaseMetadata;
+class IDBRequestLoader;
 class IDBValue;
 
 class MODULES_EXPORT IDBRequest : public EventTargetWithInlineData,
@@ -187,6 +189,9 @@ class MODULES_EXPORT IDBRequest : public EventTargetWithInlineData,
   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;