[IndexedDB] Use consistent enums on both sides of IPC.

Source/modules/indexeddb/InspectorIndexedDBAgent.cpp

Index: Source/modules/indexeddb/InspectorIndexedDBAgent.cpp
diff --git a/Source/modules/indexeddb/InspectorIndexedDBAgent.cpp b/Source/modules/indexeddb/InspectorIndexedDBAgent.cpp
index 5f7c4a975935beb0940d7d991b1c6fbdb9716f6f..9bf40a807a22a044d94c919abde95c1548d85cda 100644
--- a/Source/modules/indexeddb/InspectorIndexedDBAgent.cpp
+++ b/Source/modules/indexeddb/InspectorIndexedDBAgent.cpp
@@ -510,9 +510,9 @@ public:
                 return;
             }
 
-            idbRequest = idbIndex->openCursor(scriptState(), m_idbKeyRange.get(), blink::WebIDBCursor::Next);
+            idbRequest = idbIndex->openCursor(scriptState(), m_idbKeyRange.get(), blink::Next);
         } else {
-            idbRequest = idbObjectStore->openCursor(scriptState(), m_idbKeyRange.get(), blink::WebIDBCursor::Next);
+            idbRequest = idbObjectStore->openCursor(scriptState(), m_idbKeyRange.get(), blink::Next);
         }
         idbRequest->addEventListener(EventTypeNames::success, openCursorCallback, false);
     }