Port IndexedDB open() and database callbacks to Mojo.

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

Index: third_party/WebKit/Source/modules/indexeddb/IDBOpenDBRequest.h
diff --git a/third_party/WebKit/Source/modules/indexeddb/IDBOpenDBRequest.h b/third_party/WebKit/Source/modules/indexeddb/IDBOpenDBRequest.h
index 637d1a2880d5941284726a703fd5b32a36ea7436..8e57b9acd6cf5cf3af373682b5d9f7bc3804a1f4 100644
--- a/third_party/WebKit/Source/modules/indexeddb/IDBOpenDBRequest.h
+++ b/third_party/WebKit/Source/modules/indexeddb/IDBOpenDBRequest.h
@@ -29,21 +29,22 @@
 #include "modules/ModulesExport.h"
 #include "modules/indexeddb/IDBRequest.h"
 #include "public/platform/modules/indexeddb/WebIDBDatabase.h"
+#include "public/platform/modules/indexeddb/indexed_db.mojom-blink.h"
 #include <memory>
 
 namespace blink {
 
-class IDBDatabaseCallbacks;
-
 class MODULES_EXPORT IDBOpenDBRequest final : public IDBRequest {
     DEFINE_WRAPPERTYPEINFO();
 public:
-    static IDBOpenDBRequest* create(ScriptState*, IDBDatabaseCallbacks*, int64_t transactionId, int64_t version);
+    static IDBOpenDBRequest* create(ScriptState*, int64_t transactionId, int64_t version);
     ~IDBOpenDBRequest() override;
     DECLARE_VIRTUAL_TRACE();
 
     using IDBRequest::onSuccess;
 
+    void setClientRequest(indexed_db::mojom::blink::DatabaseClientAssociatedRequest);
+
     void onBlocked(int64_t existingVersion) override;
     void onUpgradeNeeded(int64_t oldVersion, std::unique_ptr<WebIDBDatabase>, const IDBDatabaseMetadata&, WebIDBDataLoss, String dataLossMessage) override;
     void onSuccess(std::unique_ptr<WebIDBDatabase>, const IDBDatabaseMetadata&) override;
@@ -62,9 +63,9 @@ protected:
     DispatchEventResult dispatchEventInternal(Event*) override;
 
 private:
-    IDBOpenDBRequest(ScriptState*, IDBDatabaseCallbacks*, int64_t transactionId, int64_t version);
+    IDBOpenDBRequest(ScriptState*, int64_t transactionId, int64_t version);
 
-    Member<IDBDatabaseCallbacks> m_databaseCallbacks;
+    indexed_db::mojom::blink::DatabaseClientAssociatedRequest m_clientRequest;
     const int64_t m_transactionId;
     int64_t m_version;
 };