Fix doc styling bug where underscores are invisible in some highlighted code.
Fix doc styling bug where underscores are invisible in some highlighted code.


On Windows or Linux (but not Mac), if you view the doc page at:

http://code.google.com/chrome/extensions/browserAction.html

You'll notice that in the manifest section, the highlighted code has
underscores missing for "browser_action", "default_icon", "default_title",
etc. If you increase/decrease the font size using CTL + or CTL -, the
underscores become visible.

This CL fixes that.

BUG=none
TEST=Should see underscores in highlighted code in extensions doc pre sections
on Win/Linux.


Review URL: http://codereview.chromium.org/521042

git-svn-id: http://src.chromium.org/svn/trunk/src@35668 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 119fe3cc951d507cae748efc5a2e4ba9e5815ac7
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser