Revert of DevTools: use per-LocalFrame instrumenting agents instead of per-Page ones.

Source/core/inspector/PageRuntimeAgent.h

Index: Source/core/inspector/PageRuntimeAgent.h
diff --git a/Source/core/inspector/PageRuntimeAgent.h b/Source/core/inspector/PageRuntimeAgent.h
index b02d0d4d0ffb6fadecae52668ccd8b67496aee6e..4f4a2ea8c884c744ec421cdb81bcc3645db6998d 100644
--- a/Source/core/inspector/PageRuntimeAgent.h
+++ b/Source/core/inspector/PageRuntimeAgent.h
@@ -39,13 +39,14 @@
 
 class InspectorClient;
 class InspectorPageAgent;
+class Page;
 class SecurityOrigin;
 
 class PageRuntimeAgent final : public InspectorRuntimeAgent {
 public:
-    static PassOwnPtrWillBeRawPtr<PageRuntimeAgent> create(InjectedScriptManager* injectedScriptManager, InspectorClient* client, ScriptDebugServer* scriptDebugServer, InspectorPageAgent* pageAgent)
+    static PassOwnPtrWillBeRawPtr<PageRuntimeAgent> create(InjectedScriptManager* injectedScriptManager, InspectorClient* client, ScriptDebugServer* scriptDebugServer, Page* page, InspectorPageAgent* pageAgent)
     {
-        return adoptPtrWillBeNoop(new PageRuntimeAgent(injectedScriptManager, client, scriptDebugServer, pageAgent));
+        return adoptPtrWillBeNoop(new PageRuntimeAgent(injectedScriptManager, client, scriptDebugServer, page, pageAgent));
     }
     virtual ~PageRuntimeAgent();
     virtual void trace(Visitor*) override;
@@ -58,7 +59,7 @@
     void willReleaseScriptContext(LocalFrame*, ScriptState*);
 
 private:
-    PageRuntimeAgent(InjectedScriptManager*, InspectorClient*, ScriptDebugServer*, InspectorPageAgent*);
+    PageRuntimeAgent(InjectedScriptManager*, InspectorClient*, ScriptDebugServer*, Page*, InspectorPageAgent*);
 
     virtual InjectedScript injectedScriptForEval(ErrorString*, const int* executionContextId) override;
     virtual void muteConsole() override;
@@ -66,6 +67,7 @@
     void reportExecutionContextCreation();
 
     InspectorClient* m_client;
+    RawPtrWillBeMember<Page> m_inspectedPage;
     RawPtrWillBeMember<InspectorPageAgent> m_pageAgent;
     bool m_mainWorldContextCreated;
     int m_debuggerId;