Add unprefixed factory methods to LogicalElement

Adds unprefixed factory methods (i.e. without shared, scoped or
unscoped) that point to act as default factory methods to LogicalElement

Change-Id: Ibd4888e3ecdcfc539c1ebd2be789b244b3db9ea6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5513382
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Auto-Submit: Mohamed Heikal <mheikal@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1296930}