Is it possible to translate the Apex:Inputfile upload button or chatter file upload button to a different language (Spanish)?

We are trying to post apex page messages to our custom community Visualforce Pages where we have a Language Dropdown that drops a cookie for the language to change to spanish using custom labels and translation workbench.
Unfortunately it doesn't apply to any page messages sent through apexPages.addMessage() through Apex Controller even if we use a custom label in the class that doesn't get translated.

Any help would be greatly appreciated.

Thanks!

We are trying to post apex page messages to our custom community Visualforce Pages where we have a Language Dropdown that drops a cookie for the language to change to spanish using custom labels and translation workbench.
Unfortunately it doesn't apply to any page messages sent through apexPages.addMessage() through Apex Controller even if we use a custom label in the class that doesn't get translated.

Any help would be greatly appreciated.

Thanks!