[DevTools] Move v8-related instrumentation from agents to InspectorSession.

third_party/WebKit/Source/platform/v8_inspector/V8RuntimeAgentImpl.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 347 matching lines @@
 {
     m_frontend->executionContextsCleared();
     ErrorString error;
     enable(&error);
     if (m_state->booleanProperty(V8RuntimeAgentImplState::customObjectFormatterEnabled, false))
         m_session->setCustomObjectFormatterEnabled(true);
 }
 
 void V8RuntimeAgentImpl::enable(ErrorString* errorString)
 {
+    if (m_enabled)
+        return;
+    m_session->changeInstrumentationCounter(+1);
     m_enabled = true;
     v8::HandleScope handles(m_debugger->isolate());
     m_session->reportAllContexts(this);
 }
 
 void V8RuntimeAgentImpl::disable(ErrorString* errorString)
 {
     if (!m_enabled)
         return;
     m_enabled = false;
     m_session->discardInjectedScripts();
     reset();
+    m_session->changeInstrumentationCounter(-1);
 }
 
 void V8RuntimeAgentImpl::setClearConsoleCallback(PassOwnPtr<V8RuntimeAgent::ClearConsoleCallback> callback)
 {
     m_session->setClearConsoleCallback(callback);
 }
 
 PassOwnPtr<RemoteObject> V8RuntimeAgentImpl::wrapObject(v8::Local<v8::Context> context, v8::Local<v8::Value> value, const String16& groupName, bool generatePreview)
 {
     ErrorString errorString;
@@ skipping 75 matching lines @@
     }
 }
 
 void V8RuntimeAgentImpl::inspect(PassOwnPtr<protocol::Runtime::RemoteObject> objectToInspect, PassOwnPtr<protocol::DictionaryValue> hints)
 {
     if (m_enabled)
         m_frontend->inspectRequested(objectToInspect, hints);
 }
 
 } // namespace blink