gr-diff does not depend on gr-diff-cursor (because gr-diff-cursor can
handle multiple instances of gr-diff), but it's often useful when
embedding gr-diff to also have gr-diff-cursor available. This HTML file
can be used to bundle/vulcanize the two together to embed them into
another app.
Change-Id: I67092821cf86088429f887000e4271902ad92293
7f93080d0b