Flip the true/false result of ScriptState::contextIsValid

Source/core/inspector/PageRuntimeAgent.cpp

Index: Source/core/inspector/PageRuntimeAgent.cpp
diff --git a/Source/core/inspector/PageRuntimeAgent.cpp b/Source/core/inspector/PageRuntimeAgent.cpp
index 201a18480b84dad12914cfe26f898310e16b8c02..9c1d5a2d6d0912b7907f10a6bb0e2972ec1027e8 100644
--- a/Source/core/inspector/PageRuntimeAgent.cpp
+++ b/Source/core/inspector/PageRuntimeAgent.cpp
@@ -170,7 +170,7 @@ void PageRuntimeAgent::frameWindowDiscarded(LocalDOMWindow* window)
     Vector<RefPtr<ScriptState> > scriptStatesToRemove;
     for (ScriptStateToId::iterator it = m_scriptStateToId.begin(); it != m_scriptStateToId.end(); ++it) {
         RefPtr<ScriptState> scriptState = it->key;
-        if (scriptState->contextIsValid() || window == scriptState->domWindow()) {
+        if (!scriptState->contextIsValid() || window == scriptState->domWindow()) {
             scriptStatesToRemove.append(scriptState);
             m_frontend->executionContextDestroyed(it->value);
         }