This week I updated my IDE to Eclipse 4.3.2 which comes with Egit 3.2. After that my „Push to Gerrit“ action was gone from the usual place. If the same thing happens to you, here is how to get it back:
In the context menu, select Team > Remote > Configure Push to Upstream.
In the upcoming dialog, select Add
Configure HEAD to point to refs/for/master
After applying, you see the entry in the configuration dialog:
Now Dry-Run and Save.
When you go back to Team > Remote you will see the Push to Gerrit and Fetch from Gerrit actions are back.