Revert 2.5 CLs that relate to pulling Extension port management out of messaging.js.

extensions/renderer/dispatcher.cc

Index: extensions/renderer/dispatcher.cc
diff --git a/extensions/renderer/dispatcher.cc b/extensions/renderer/dispatcher.cc
index b78adc15d379014018f1a4d295bee9f98d50bfc3..f210e27e2b0f290c16be549822ba72fb78076561 100644
--- a/extensions/renderer/dispatcher.cc
+++ b/extensions/renderer/dispatcher.cc
@@ -479,7 +479,6 @@ std::vector<std::pair<std::string, int> > Dispatcher::GetJsResources() {
   resources.push_back(std::make_pair("messaging", IDR_MESSAGING_JS));
   resources.push_back(std::make_pair("messaging_utils",
                                      IDR_MESSAGING_UTILS_JS));
-  resources.push_back(std::make_pair("port", IDR_PORT_JS));
   resources.push_back(std::make_pair(kSchemaUtils, IDR_SCHEMA_UTILS_JS));
   resources.push_back(std::make_pair("sendRequest", IDR_SEND_REQUEST_JS));
   resources.push_back(std::make_pair("setIcon", IDR_SET_ICON_JS));