DevTools: pass agent host id to the renderer (Blink).

Source/core/inspector/InspectorController.h

Index: Source/core/inspector/InspectorController.h
diff --git a/Source/core/inspector/InspectorController.h b/Source/core/inspector/InspectorController.h
index 8fdffd46864231a19475fe22cd345614ac4a8b12..85932ae4a024038511c62d135eb5febeeb209fde 100644
--- a/Source/core/inspector/InspectorController.h
+++ b/Source/core/inspector/InspectorController.h
@@ -54,6 +54,7 @@ class InspectorFrontendChannel;
 class InspectorFrontendClient;
 class InspectorLayerTreeAgent;
 class InspectorPageAgent;
+class InspectorResourceAgent;
 class InspectorTimelineAgent;
 class InspectorTracingAgent;
 class InspectorOverlay;
@@ -89,10 +90,10 @@ public:
 
     void dispatchMessageFromFrontend(const String& message);
 
-    void connectFrontend(InspectorFrontendChannel*);
+    void connectFrontend(const String& hostId, InspectorFrontendChannel*);
     void disconnectFrontend();
     void reconnectFrontend();
-    void reuseFrontend(InspectorFrontendChannel*, const String& inspectorStateCookie);
+    void reuseFrontend(const String& hostId, InspectorFrontendChannel*, const String& inspectorStateCookie);
     void setProcessId(long);
     void setLayerTreeId(int);
 
@@ -145,6 +146,7 @@ private:
 
     InspectorDOMAgent* m_domAgent;
     InspectorPageAgent* m_pageAgent;
+    InspectorResourceAgent* m_resourceAgent;
     InspectorTimelineAgent* m_timelineAgent;
     InspectorLayerTreeAgent* m_layerTreeAgent;
     InspectorTracingAgent* m_tracingAgent;
@@ -158,6 +160,7 @@ private:
     Vector<InspectorAgent*> m_moduleAgents;
     bool m_isUnderTest;
     bool m_deferredAgentsInitialized;
+    String m_hostId;
 };
 
 }