Comment by macqm

It actually does a lot more than you think.

For example it does pretty interesting diffing - Chrome downloads a patch and uses the previously left-behind copy of the installer to re-build new binaries from the small diff it pulled. See more:

- https://chromium.googlesource.com/chromium/src/+/HEAD/compon...

- https://www.chromium.org/developers/design-documents/softwar...