Fire window.onerror for uncaught IndexedDB errors

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 52eb239eea2247897fdfd639af51b854fddb957d..f39b147c17d0864dc4d0038df4ee093d72f5072e 100644
--- a/third_party/WebKit/Source/modules/indexeddb/IDBRequest.h
+++ b/third_party/WebKit/Source/modules/indexeddb/IDBRequest.h
@@ -55,6 +55,7 @@ class ExceptionState;
 class IDBCursor;
 struct IDBDatabaseMetadata;
 class IDBValue;
+class SourceLocation;
 
 class MODULES_EXPORT IDBRequest : public EventTargetWithInlineData,
                                   public ActiveScriptWrappable<IDBRequest>,
@@ -187,6 +188,8 @@ class MODULES_EXPORT IDBRequest : public EventTargetWithInlineData,
   bool m_preventPropagation = false;
   bool m_resultDirty = true;
 
+  std::unique_ptr<SourceLocation> m_creationSource;
+
   // Pointer back to the WebIDBCallbacks that holds a persistent reference to
   // this object.
   WebIDBCallbacks* m_webCallbacks = nullptr;