DevTools: simplify the async instrumentation harness.

third_party/WebKit/Source/core/inspector/ThreadDebugger.cpp

Index: third_party/WebKit/Source/core/inspector/ThreadDebugger.cpp
diff --git a/third_party/WebKit/Source/core/inspector/ThreadDebugger.cpp b/third_party/WebKit/Source/core/inspector/ThreadDebugger.cpp
index b885df213c61b6cde96d2a9c4e70834b513c1584..e2681cea7cfbd41d44761944e072498eaa8b0bf9 100644
--- a/third_party/WebKit/Source/core/inspector/ThreadDebugger.cpp
+++ b/third_party/WebKit/Source/core/inspector/ThreadDebugger.cpp
@@ -52,11 +52,6 @@ bool ThreadDebugger::formatAccessorsAsProperties(v8::Local<v8::Value> value)
     return V8DOMWrapper::isWrapper(m_isolate, value);
 }
 
-bool ThreadDebugger::hasRecursionLevel()
-{
-    return !!v8::MicrotasksScope::GetCurrentDepth(m_isolate);
-}
-
 bool ThreadDebugger::isExecutionAllowed()
 {
     return !ScriptForbiddenScope::isScriptForbidden();