Address comments
Add a basic parser benchmark
This CL adds a basic benchmark for the parser. There isn't a direct way to
exercise the parser in Sky, so we use imports.
This CL also adds a load event to <import> to determine when the import is done
loading.
R=eseidel@chromium.org
parser benchmark wip
This CL adds basic support for the <import> elements. We're using the same imports
machinery as <link rel="import">, which simplifies this patch substantially.
Currently we support both <link rel="import"> and <import>. Once this CL lands, I'll
update all the existing modules and then we can drop support for
<link rel="import">.
R=ojan@chromium.org
Review URL: https://codereview.chromium.org/681983005
