Drop V8RecursionScope dependency on ExecutionContext

Source/modules/indexeddb/IDBTransaction.cpp

Index: Source/modules/indexeddb/IDBTransaction.cpp
diff --git a/Source/modules/indexeddb/IDBTransaction.cpp b/Source/modules/indexeddb/IDBTransaction.cpp
index 85c431cfe163ee07c3c1283d792808e22bd07490..fa3a7e210e67f9b55f6e0f163cc1886a067f1d5d 100644
--- a/Source/modules/indexeddb/IDBTransaction.cpp
+++ b/Source/modules/indexeddb/IDBTransaction.cpp
@@ -28,6 +28,7 @@
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ExceptionStatePlaceholder.h"
+#include "bindings/core/v8/V8PerIsolateData.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/events/EventQueue.h"
 #include "core/inspector/ScriptCallStack.h"
@@ -37,7 +38,6 @@
 #include "modules/indexeddb/IDBIndex.h"
 #include "modules/indexeddb/IDBObjectStore.h"
 #include "modules/indexeddb/IDBOpenDBRequest.h"
-#include "modules/indexeddb/IDBPendingTransactionMonitor.h"
 #include "modules/indexeddb/IDBTracing.h"
 
 using blink::WebIDBDatabase;
@@ -77,7 +77,7 @@ IDBTransaction::IDBTransaction(ScriptState* scriptState, int64_t id, const Vecto
     }
 
     if (m_state == Active)
-        IDBPendingTransactionMonitor::from(*scriptState->executionContext()).addNewTransaction(*this);
+        V8PerIsolateData::from(scriptState->isolate())->ensureIDBPendingTransactionMonitor()->addNewTransaction(*this);
     m_database->transactionCreated(this);
 }