Add the backchannel for Blobs to be received into Blink from the database backend.

Source/modules/indexeddb/IDBRequest.h

Index: Source/modules/indexeddb/IDBRequest.h
diff --git a/Source/modules/indexeddb/IDBRequest.h b/Source/modules/indexeddb/IDBRequest.h
index 2bca602f30ef37782e63b907ee496003dbeb0e10..0192631cfefc8650c9c74d32d33126174aeec947 100644
--- a/Source/modules/indexeddb/IDBRequest.h
+++ b/Source/modules/indexeddb/IDBRequest.h
@@ -42,6 +42,7 @@
 #include "modules/indexeddb/IDBAny.h"
 #include "modules/indexeddb/IDBTransaction.h"
 #include "modules/indexeddb/IndexedDB.h"
+#include "public/platform/WebBlobInfo.h"
 #include "public/platform/WebIDBCursor.h"
 
 namespace WebCore {
@@ -97,13 +98,13 @@ public:
 
     virtual void onError(PassRefPtrWillBeRawPtr<DOMError>);
     virtual void onSuccess(const Vector<String>&);
-    virtual void onSuccess(PassOwnPtr<blink::WebIDBCursor>, PassRefPtr<IDBKey>, PassRefPtr<IDBKey> primaryKey, PassRefPtr<SharedBuffer>);
+    virtual void onSuccess(PassOwnPtr<blink::WebIDBCursor>, PassRefPtr<IDBKey>, PassRefPtr<IDBKey> primaryKey, PassRefPtr<SharedBuffer>, PassOwnPtr<Vector<blink::WebBlobInfo> >);
     virtual void onSuccess(PassRefPtr<IDBKey>);
-    virtual void onSuccess(PassRefPtr<SharedBuffer>);
-    virtual void onSuccess(PassRefPtr<SharedBuffer>, PassRefPtr<IDBKey>, const IDBKeyPath&);
+    virtual void onSuccess(PassRefPtr<SharedBuffer>, PassOwnPtr<Vector<blink::WebBlobInfo> >);
+    virtual void onSuccess(PassRefPtr<SharedBuffer>, PassOwnPtr<Vector<blink::WebBlobInfo> >, PassRefPtr<IDBKey>, const IDBKeyPath&);
     virtual void onSuccess(int64_t);
     virtual void onSuccess();
-    virtual void onSuccess(PassRefPtr<IDBKey>, PassRefPtr<IDBKey> primaryKey, PassRefPtr<SharedBuffer>);
+    virtual void onSuccess(PassRefPtr<IDBKey>, PassRefPtr<IDBKey> primaryKey, PassRefPtr<SharedBuffer>, PassOwnPtr<Vector<blink::WebBlobInfo> >);
 
     // Only IDBOpenDBRequest instances should receive these:
     virtual void onBlocked(int64_t oldVersion) { ASSERT_NOT_REACHED(); }
@@ -137,6 +138,8 @@ public:
 
     IDBCursor* getResultCursor() const;
 
+    void ackReceivedBlobs(const Vector<blink::WebBlobInfo>*);
+
 protected:
     IDBRequest(ExecutionContext*, PassRefPtr<IDBAny> source, IDBTransaction*);
     void enqueueEvent(PassRefPtrWillBeRawPtr<Event>);
@@ -151,8 +154,9 @@ protected:
     bool m_requestAborted; // May be aborted by transaction then receive async onsuccess; ignore vs. assert.
 
 private:
-    void setResultCursor(PassRefPtr<IDBCursor>, PassRefPtr<IDBKey>, PassRefPtr<IDBKey> primaryKey, PassRefPtr<SharedBuffer> value);
+    void setResultCursor(PassRefPtr<IDBCursor>, PassRefPtr<IDBKey>, PassRefPtr<IDBKey> primaryKey, PassRefPtr<SharedBuffer> value, PassOwnPtr<Vector<blink::WebBlobInfo> >);
     void checkForReferenceCycle();
+    void handleBlobAcks();
 
     RefPtr<NewScriptState> m_scriptState;
     RefPtr<IDBAny> m_source;
@@ -171,6 +175,7 @@ private:
     RefPtr<IDBKey> m_cursorKey;
     RefPtr<IDBKey> m_cursorPrimaryKey;
     RefPtr<SharedBuffer> m_cursorValue;
+    OwnPtr<Vector<blink::WebBlobInfo> > m_blobInfo;
 
     bool m_didFireUpgradeNeededEvent;
     bool m_preventPropagation;