[DevTools] Do not instrument with InspectorInspectorAgent.

Source/core/inspector/InspectorInstrumentation.cpp

Index: Source/core/inspector/InspectorInstrumentation.cpp
diff --git a/Source/core/inspector/InspectorInstrumentation.cpp b/Source/core/inspector/InspectorInstrumentation.cpp
index db213f555098aabba10a2990c5e5faed37fd9795..f66992f62d7f709083a7679e38c3b36d30a18cd6 100644
--- a/Source/core/inspector/InspectorInstrumentation.cpp
+++ b/Source/core/inspector/InspectorInstrumentation.cpp
@@ -37,7 +37,6 @@
 #include "core/inspector/InspectorCSSAgent.h"
 #include "core/inspector/InspectorConsoleAgent.h"
 #include "core/inspector/InspectorDebuggerAgent.h"
-#include "core/inspector/InspectorInspectorAgent.h"
 #include "core/inspector/InspectorProfilerAgent.h"
 #include "core/inspector/InspectorResourceAgent.h"
 #include "core/inspector/InstrumentingAgents.h"
@@ -119,9 +118,9 @@ void willDestroyResourceImpl(Resource* cachedResource)
 
 bool collectingHTMLParseErrorsImpl(InstrumentingAgents* instrumentingAgents)
 {
-    if (InspectorInspectorAgent* inspectorAgent = instrumentingAgents->inspectorInspectorAgent())
-        return inspectorAgent->hasFrontend();
-    return false;
+    if (!instrumentingAgentsSet)

[yurys, 2015/03/26 12:55:33]

Can you add an assert that instrumentingAgentsSet is accessed on the main thread
only?

[dgozman, 2015/03/26 15:52:59]

Done.

+        return false;
+    return instrumentingAgentsSet->contains(instrumentingAgents);
 }
 
 void appendAsyncCallStack(ExecutionContext* executionContext, ScriptCallStack* callStack)