I have installed Eclipse Luna 4.4-M6. I tried installing the Google Plugin for Eclipse 4.3 (Kepler), but Eclipse would not allow me to install it.
Is there some way
This seems to be recently resolved.
I didn't find the plugin in the Marketplace as of writing this, but there's an update site: https://dl.google.com/eclipse/plugin/4.4
You can read more about this at https://developers.google.com/eclipse/docs/install-eclipse-4.4