Remove debugger id, use local frame id instead.

Source/core/inspector/PageDebuggerAgent.h

Index: Source/core/inspector/PageDebuggerAgent.h
diff --git a/Source/core/inspector/PageDebuggerAgent.h b/Source/core/inspector/PageDebuggerAgent.h
index 35500481cdb7f153cc54101b317ca31818b6c912..8265d9ade1507ec09db29a3fb3ea45dfd79055e3 100644
--- a/Source/core/inspector/PageDebuggerAgent.h
+++ b/Source/core/inspector/PageDebuggerAgent.h
@@ -53,7 +53,7 @@ class CORE_EXPORT PageDebuggerAgent final
     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(PageDebuggerAgent);
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(PageDebuggerAgent);
 public:
-    static PassOwnPtrWillBeRawPtr<PageDebuggerAgent> create(MainThreadDebugger*, InspectorPageAgent*, InjectedScriptManager*, InspectorOverlay*, int debuggerId);
+    static PassOwnPtrWillBeRawPtr<PageDebuggerAgent> create(MainThreadDebugger*, InspectorPageAgent*, InjectedScriptManager*, InspectorOverlay*);
     ~PageDebuggerAgent() override;
     DECLARE_VIRTUAL_TRACE();
 
@@ -84,11 +84,10 @@ private:
     InjectedScript injectedScriptForEval(ErrorString*, const int* executionContextId) override;
     bool canExecuteScripts() const;
 
-    PageDebuggerAgent(MainThreadDebugger*, InspectorPageAgent*, InjectedScriptManager*, InspectorOverlay*, int debuggerId);
+    PageDebuggerAgent(MainThreadDebugger*, InspectorPageAgent*, InjectedScriptManager*, InspectorOverlay*);
     RawPtrWillBeMember<MainThreadDebugger> m_mainThreadDebugger;
     RawPtrWillBeMember<InspectorPageAgent> m_pageAgent;
     RawPtrWillBeMember<InspectorOverlay> m_overlay;
-    int m_debuggerId;
     HashMap<String, String> m_compiledScriptURLs;
 };