DevTools: make InspectorDebuggerAgent aggregate V8DebuggerAgent instead of inheriting

Source/core/inspector/InspectorConsoleAgent.h

Index: Source/core/inspector/InspectorConsoleAgent.h
diff --git a/Source/core/inspector/InspectorConsoleAgent.h b/Source/core/inspector/InspectorConsoleAgent.h
index 5006a1ec0052588e59d6366ae695f54fdef8f82f..9756e5617e899c0e9fdd6f177cdf37d5f137963e 100644
--- a/Source/core/inspector/InspectorConsoleAgent.h
+++ b/Source/core/inspector/InspectorConsoleAgent.h
@@ -36,7 +36,7 @@ namespace blink {
 class ConsoleMessage;
 class ConsoleMessageStorage;
 class InjectedScriptManager;
-class InspectorDebuggerAgent;
+class V8DebuggerAgent;
 
 typedef String ErrorString;
 
@@ -47,7 +47,7 @@ public:
     ~InspectorConsoleAgent() override;
     DECLARE_VIRTUAL_TRACE();
 
-    void setDebuggerAgent(InspectorDebuggerAgent* debuggerAgent) { m_debuggerAgent = debuggerAgent; }
+    void setDebuggerAgent(V8DebuggerAgent* debuggerAgent) { m_debuggerAgent = debuggerAgent; }
 
     void enable(ErrorString*) override;
     bool enabled() { return m_enabled; }
@@ -66,7 +66,7 @@ protected:
     virtual void disableStackCapturingIfNeeded() = 0;
 
     RawPtrWillBeMember<InjectedScriptManager> m_injectedScriptManager;
-    RawPtrWillBeMember<InspectorDebuggerAgent> m_debuggerAgent;
+    RawPtrWillBeMember<V8DebuggerAgent> m_debuggerAgent;
     bool m_enabled;
 };