Most of the noise is from the fact that clang-format on parser/html/*.{h,cpp}
reformatted all sorts of stuff. Not running it caused lots of format changes
from the generator... I guess we changed the format rules since the last time
this got run?
MozReview-Commit-ID: IA2G87zUIKN
Adding <meta name="viewport" content="width=device-width"/> to the view-source
document achieves two things when used in a mobile browser, such as Fennec:
1. When word-wrapping is turned off, the page displays at a more readable
initial zoom level.
2. As of now, font inflation (when enabled) kicks in on the document when word-
wrapping is turned on, which leads to the line numbers appearing in a
noticeably smaller font size than the rest of the page.
Adding the above meta viewport header marks the document as "mobile-friendly"
and suppresses font inflation, which means that line numbers will appear
normally even with word-wrapping enabled.
getMathMLSelection() in browser-content.js isn't actually used in Fennec at the
moment, but for consistency we add the meta viewport tag there as well.
MozReview-Commit-ID: K9KVHh7g7TF
