Make sure that a given app/extension requests only its own resources.

chrome/browser/extensions/api/serial/serial_api.h

Index: chrome/browser/extensions/api/serial/serial_api.h
diff --git a/chrome/browser/extensions/api/serial/serial_api.h b/chrome/browser/extensions/api/serial/serial_api.h
index 7e43b63dc1707dfbd87143fd3a952a47b4b9466f..5c10290ccad1d94e9579df93cb1a4c1b64584af4 100644
--- a/chrome/browser/extensions/api/serial/serial_api.h
+++ b/chrome/browser/extensions/api/serial/serial_api.h
@@ -30,6 +30,9 @@ class SerialAsyncApiFunction : public AsyncApiFunction {
   // AsyncApiFunction:
   virtual bool PrePrepare() OVERRIDE;
 
+  SerialConnection* GetSerialConnection(int api_resource_id);
+  void RemoveSerialConnection(int api_resource_id);
+
   ApiResourceManager<SerialConnection>* manager_;
 };
 
@@ -67,6 +70,7 @@ class SerialOpenFunction : public SerialAsyncApiFunction {
   virtual SerialConnection* CreateSerialConnection(
       const std::string& port,
       int bitrate,
+      const std::string& owner_extension_id,
       ApiResourceEventNotifier* event_notifier);
   virtual bool DoesPortExist(const std::string& port);