Docs: Make explicit in style guide that new and delete are banned

Change-Id: I16bc164d032127478e51d4c5d19f21bc72ea13b2
Reviewed-on: https://chromium-review.googlesource.com/c/1461333
Reviewed-by: Darwin Huang <huangdarwin@chromium.org>
Reviewed-by: Jeremy Roman <jbroman@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Darwin Huang <huangdarwin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#631089}
1 file changed