OnContextCreated is called in the Render process immediately after a CefV8Context is created. An IPC message is immediately sent to notify the context has been created (should be safe to execute javascript). If the page has no javascript then no V8Context will be created and as a result this method will not be called. Currently only called for the Main frame IsMain

OnContextReleased is called in the Render process immediately before the CefV8Context is released. An IPC message is immediately sent to notify the context has been released (cannot execute javascript this point). If the page had no javascript then the context would not have been created and as a result this method will not be called. Currently only called for the Main frame IsMain

Invoked when an element in the UI gains focus (or possibly no element gains focus; i.e. an element lost focus).