Disable Google Translate on viewer in Chrome.

test/pdfs/yo01.pdf triggered "This page is in Japanese. Would you like to translate it?" info bar in Chrome. This commit adds an extra meta tag to the viewer for GENERIC and CHROME to disable this "feature"..

![pdfjs-google-translate](https://f.cloud.github.com/assets/1365071/801292/54fd194e-ed9c-11e2-8003-e7a5be51d90a.png)