Move //{chromeos/components => ash/content}/scanning

//chromeos/components/scanning depends on //content, so this CL moves
to //ash/content/scanning.

This CL is part of the Chrome OS source code directory migration:
https://docs.google.com/document/d/1g-98HpzA8XcoGBWUv1gQNr4rbnD5yfvbtYZyPDDbkaE.

Change-Id: I0217e22c5b3900814ff52ed9f1b1de71d091a538
Bug: 1164001
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2767358
Commit-Queue: Yeunjoo Choi <[email protected]>
Reviewed-by: Hidehiko Abe <[email protected]>
Owners-Override: Hidehiko Abe <[email protected]>
Cr-Commit-Position: refs/heads/master@{#867952}
diff --git a/WATCHLISTS b/WATCHLISTS
index c68ad7a..215c7073 100644
--- a/WATCHLISTS
+++ b/WATCHLISTS
@@ -1664,7 +1664,7 @@
                   '|components/metrics/public/mojom/call_stack*',
     },
     'scanning': {
-      'filepath': 'chromeos/components/scanning/'\
+      'filepath': 'ash/content/scanning/'\
                   '|chrome/browser/ash/scanning/',
     },
     'screen_orientation': {