Move the shadow-dom directory from web-platform-tests/ to wpt/.

third_party/WebKit/LayoutTests/W3CImportExpectations

 # This file controls which subdirectories of the w3c test repos we do (or don't) import.
 #
 # This file acts as a blacklist; directories and files not listed here will automatically
 # be found and imported. The only exception is that the manual tests (i.e. those with a
 # filename ending with "-manual.html" or "-manual.htm") are never imported.
 
 # When removing blacklist entries:
 # * Comment out the line rather than deleting it, to show it is intentional
 # * Change [ Skip ] to [ Pass ]
 # * Add a leading comment: ## Owners: user@example.com
@@ skipping 260 matching lines @@
 imported/web-platform-tests/resources/webidl2/test [ Skip ]
 imported/web-platform-tests/screen-orientation [ Skip ]
 imported/web-platform-tests/selection [ Skip ]
 imported/web-platform-tests/selectors [ Skip ]
 imported/web-platform-tests/selectors-api [ Skip ]
 imported/web-platform-tests/serve [ Skip ]
 imported/web-platform-tests/serve.py [ Skip ]
 imported/web-platform-tests/server-side.md [ Skip ]
 imported/web-platform-tests/service-workers [ Skip ]
 ## Owners: kochi@chromium.org crbug.com/505364
-# imported/web-platform-tests/shadow-dom [ Pass ]
+# imported/wpt/shadow-dom [ Pass ]
 ## Owners: jww@chromium.org
 imported/web-platform-tests/streams [ Skip ]
 imported/web-platform-tests/subresource-integrity [ Skip ]
 imported/web-platform-tests/svg [ Skip ]
 imported/web-platform-tests/tools [ Skip ]
 ## Owners: chongz@chromium.org
 # imported/wpt/touch-events [ Pass ]
 imported/web-platform-tests/typedarrays [ Skip ]
 ## Owners: dtapuska@chromium.org
 # imported/wpt/uievents [ Pass ]
@@ skipping 18 matching lines @@
 # Skip OWNERS files in web-platform-tests. crbug.com/584660
 imported/wpt/user-timing/OWNERS [ Skip ]
 imported/wpt/custom-elements/OWNERS [ Skip ]
 imported/wpt/gamepad/OWNERS [ Skip ]
 imported/web-platform-tests/FileAPI/OWNERS [ Skip ]
 imported/web-platform-tests/html/OWNERS [ Skip ]
 imported/wpt/webrtc/OWNERS [ Skip ]
 imported/wpt/html-imports/OWNERS [ Skip ]
 imported/wpt/IndexedDB/OWNERS [ Skip ]
 imported/wpt/dom/OWNERS [ Skip ]
-imported/web-platform-tests/shadow-dom/OWNERS [ Skip ]
+imported/wpt/shadow-dom/OWNERS [ Skip ]
 imported/wpt/encoding/OWNERS [ Skip ]
 imported/wpt/hr-time/OWNERS [ Skip ]
 imported/web-platform-tests/pointerevents/OWNERS [ Skip ]
 imported/wpt/webstorage/OWNERS [ Skip ]
 imported/wpt/mediacapture-streams/OWNERS [ Skip ]
 imported/wpt/touch-events/OWNERS [ Skip ]
 imported/wpt/uievents/OWNERS [ Skip ]
 imported/wpt/web-animations/OWNERS [ Skip ]
 
 # Exceptions for individual files that fail due to bugs in the
@@ skipping 439 matching lines @@
 
 # crbug.com/561421: Update meta refresh parsing to match the new spec
 imported/web-platform-tests/html/semantics/document-metadata/the-meta-element/pragma-directives/attr-meta-http-equiv-refresh/parsing.html [ Skip ]
 imported/web-platform-tests/html/semantics/document-metadata/the-meta-element/pragma-directives/attr-meta-http-equiv-refresh/support [ Skip ]
 
 # crbug.com/441355: MutationObserver incorrect for replaceChild (causes timeout)
 imported/wpt/dom/nodes/MutationObserver-childList.html [ Skip ]
 
 # crbug.com/574461: update-w3c-deps imports .py file with x-bit cleared
 imported/wpt/dom/nodes/Document-createElement-namespace-tests/generate.py [ Skip ]