DevTools: Async call stacks for window.postMessage()

Source/core/inspector/InspectorInstrumentation.idl

Index: Source/core/inspector/InspectorInstrumentation.idl
diff --git a/Source/core/inspector/InspectorInstrumentation.idl b/Source/core/inspector/InspectorInstrumentation.idl
index 6ac0158a69d76510a3d752f95c9a756c198fda97..288d5dadaf3de8d8bf94fc2d0ceb9f5b487bd66f 100644
--- a/Source/core/inspector/InspectorInstrumentation.idl
+++ b/Source/core/inspector/InspectorInstrumentation.idl
@@ -454,6 +454,21 @@ interface InspectorInstrumentation {
 
     [DOMDebugger, Inline=FastReturn]
     void willExecuteCustomElementCallback([Keep] Element*);
+
+    [Debugger, Inline=FastReturn]
+    int traceAsyncOperationStarting([Keep] ExecutionContext*, const String& operationName);
+
+    [Debugger, Inline=FastReturn]
+    void traceAsyncOperationCompleted([Keep] ExecutionContext*, int operationId);
+
+    [Debugger, Inline=FastReturn]
+    InspectorInstrumentationCookie traceAsyncOperationCompletedCallbackStarting([Keep] ExecutionContext*, int operationId);
+
+    [Debugger, Inline=FastReturn]
+    InspectorInstrumentationCookie traceAsyncCallbackStarting([Keep] ExecutionContext*, int operationId);
+
+    [Debugger, Inline=FastReturn]
+    void traceAsyncCallbackCompleted(const InspectorInstrumentationCookie&);
 }
 
 interface InspectorConsoleInstrumentation {