DevTools: disable DOMDebuggerAgent when DOMAgent or DebuggerAgent were disabled.

Source/core/inspector/InspectorDebuggerAgent.h

 /*
  * Copyright (C) 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010-2011 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 151 matching lines @@
     class Listener {
     public:
         virtual ~Listener() { }
         virtual void debuggerWasEnabled() = 0;
         virtual void debuggerWasDisabled() = 0;
         virtual void stepInto() = 0;
         virtual void didPause() = 0;
     };
     void setListener(Listener* listener) { m_listener = listener; }
 
+    bool enabled();
+
     virtual ScriptDebugServer& scriptDebugServer() = 0;
 
     void setBreakpoint(const String& scriptId, int lineNumber, int columnNumber, BreakpointSource, const String& condition = String());
     void removeBreakpoint(const String& scriptId, int lineNumber, int columnNumber, BreakpointSource);
 
 protected:
     explicit InspectorDebuggerAgent(InjectedScriptManager*);
 
     virtual void startListeningScriptDebugServer() = 0;
     virtual void stopListeningScriptDebugServer() = 0;
@@ skipping 10 matching lines @@
     void pageDidCommitLoad();
 
 private:
     SkipPauseRequest shouldSkipExceptionPause();
     SkipPauseRequest shouldSkipBreakpointPause();
     SkipPauseRequest shouldSkipStepPause();
 
     void cancelPauseOnNextStatement();
     void addMessageToConsole(MessageSource, MessageType);
 
-    bool enabled();
-
     PassRefPtr<TypeBuilder::Array<TypeBuilder::Debugger::CallFrame> > currentCallFrames();
     PassRefPtr<TypeBuilder::Debugger::StackTrace> currentAsyncStackTrace();
 
     virtual void didParseSource(const String& scriptId, const Script&) OVERRIDE FINAL;
     virtual void failedToParseSource(const String& url, const String& data, int firstLine, int errorLine, const String& errorMessage) OVERRIDE FINAL;
 
     void setPauseOnExceptionsImpl(ErrorString*, int);
 
     PassRefPtr<TypeBuilder::Debugger::Location> resolveBreakpoint(const String& breakpointId, const String& scriptId, const ScriptBreakpoint&, BreakpointSource);
     void removeBreakpoint(const String& breakpointId);
@@ skipping 27 matching lines @@
     int m_skipStepInCount;
     bool m_skipAllPauses;
     OwnPtr<ScriptRegexp> m_cachedSkipStackRegExp;
     AsyncCallStackTracker m_asyncCallStackTracker;
 };
 
 } // namespace WebCore
 
 
 #endif // !defined(InspectorDebuggerAgent_h)