Rename shortcut to pinned to avoid clash with drive concept of shortcut.

Bug: 957456
Change-Id: Ia43888711e7fa112d5cd718459d61a15bf53f49c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1680437
Reviewed-by: Luciano Pacheco <lucmult@chromium.org>
Commit-Queue: Stuart Langley <slangley@chromium.org>
Cr-Commit-Position: refs/heads/master@{#673625}
12 files changed