Improvements to build_command_buffer.py

Allows a shortcut, -t, for --chrome-build-type and clarifies meaning of the value in help.

Removes --fetch. This used to work with gyp builds but since it doesn't run gn it currently fails to build after fetching the src. Also, it wasn't being used.

Adds --no-hooks. Like --no-sync it but also doesn't run gclient runhooks.

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2236953002

Review-Url: https://codereview.chromium.org/2236953002
1 file changed