Omit 'window.' when accessing browsing location

Omit 'window.' when accessing browsing location

The location object is a global, just like document.

Using it via 'window' needlessly adds complexity and, for example,
makes it harder to catch typos in static analysis.

Also standardise on location.href in place of the many different
variants, like:

 location =
 location.href =
 location.assign() =

And each with 'window', 'document' and without host object.

Change-Id: I77510294d8b5bd4b8a1b08e06817762a7839d43d