DevTools: force state cookie update upon addScriptToEvaluateOnLoad.

Source/WebCore/inspector/InspectorPageAgent.cpp

Index: Source/WebCore/inspector/InspectorPageAgent.cpp
diff --git a/Source/WebCore/inspector/InspectorPageAgent.cpp b/Source/WebCore/inspector/InspectorPageAgent.cpp
index 960afa9ec3b41acb2e72884218bb37dc35a9c932..5e3ca385ed697be474415703a40e434c0d9a7d66 100644
--- a/Source/WebCore/inspector/InspectorPageAgent.cpp
+++ b/Source/WebCore/inspector/InspectorPageAgent.cpp
@@ -432,6 +432,9 @@ void InspectorPageAgent::addScriptToEvaluateOnLoad(ErrorString*, const String& s
         *identifier = String::number(++m_lastScriptIdentifier);
     } while (scripts->find(*identifier) != scripts->end());
     scripts->setString(*identifier, source);
+
+    // Force cookie serialization.
+    m_state->setObject(PageAgentState::pageAgentScriptsToEvaluateOnLoad, scripts);
 }
 
 void InspectorPageAgent::removeScriptToEvaluateOnLoad(ErrorString* error, const String& identifier)