Import hr-time and user-timing tests, remove redundant webperf copies

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 79 matching lines @@
 imported/web-platform-tests/domxpath [ Skip ]
 ## Owners: jsbell@chromium.org
 # imported/web-platform-tests/encoding [ Pass ]
 imported/web-platform-tests/eventsource [ Skip ]
 imported/web-platform-tests/ext-xhtml-pubid [ Skip ]
 imported/web-platform-tests/fetch [ Skip ]
 imported/web-platform-tests/fonts [ Skip ]
 ## Owners: bajones@chromium.org
 # imported/web-platform-tests/gamepad [ Pass ]
 imported/web-platform-tests/geolocation-API [ Skip ]
-imported/web-platform-tests/hr-time [ Skip ]
+## Owners: jsbell@chromium.org
+# imported/web-platform-tests/hr-time [ Pass ]
 ## Owners: tkent@chromium.org
 # imported/web-platform-tests/html [ Pass ]
 ## Owners: TBD
 # imported/web-platform-tests/html-imports [ Pass ]
 imported/web-platform-tests/html-longdesc [ Skip ]
 imported/web-platform-tests/html-media-capture [ Skip ]
 imported/web-platform-tests/http [ Skip ]
 imported/web-platform-tests/images [ Skip ]
 imported/web-platform-tests/infrastructure [ Skip ]
 imported/web-platform-tests/js [ Skip ]
@@ skipping 29 matching lines @@
 imported/web-platform-tests/service-workers [ Skip ]
 ## Owners: TBD
 # imported/web-platform-tests/shadow-dom [ Pass ]
 ## Owners: mkwst@chromium.org
 # imported/web-platform-tests/subresource-integrity [ Pass ]
 imported/web-platform-tests/svg [ Skip ]
 imported/web-platform-tests/tools [ Skip ]
 imported/web-platform-tests/touch-events [ Skip ]
 imported/web-platform-tests/typedarrays [ Skip ]
 imported/web-platform-tests/url [ Skip ]
-imported/web-platform-tests/user-timing [ Skip ]
+## Owners: jsbell@chromium.org
+# imported/web-platform-tests/user-timing [ Pass ]
 imported/web-platform-tests/vibration [ Skip ]
 imported/web-platform-tests/web-animations [ Skip ]
 imported/web-platform-tests/webaudio [ Skip ]
 imported/web-platform-tests/webdriver [ Skip ]
 imported/web-platform-tests/webgl [ Skip ]
 imported/web-platform-tests/webmessaging [ Skip ]
 ## Owners: hta@chromium.org
 # imported/web-platform-tests/webrtc [ Pass ]
 imported/web-platform-tests/websockets [ Skip ]
 imported/web-platform-tests/webstorage [ Skip ]
@@ skipping 283 matching lines @@
 imported/csswg-test/css-writing-modes-3/text-combine-upright-parsing-invalid-001.html [ Skip ]
 imported/csswg-test/css-writing-modes-3/text-combine-upright-parsing-invalid-002.html [ Skip ]
 imported/csswg-test/css-writing-modes-3/text-combine-upright-parsing-valid-001.html [ Skip ]
 imported/csswg-test/css-writing-modes-3/text-combine-upright-parsing-valid-002.html [ Skip ]
 imported/csswg-test/css-writing-modes-3/value-digit2-and-inherit-001.htm [ Skip ]
 imported/csswg-test/css-writing-modes-3/value-digits2-002.html [ Skip ]
 imported/csswg-test/css-writing-modes-3/value-digits3-001.html [ Skip ]
 imported/csswg-test/css-writing-modes-3/value-digits3-002.html [ Skip ]
 imported/csswg-test/css-writing-modes-3/value-digits4-001.html [ Skip ]
 imported/csswg-test/css-writing-modes-3/value-digits4-002.html [ Skip ]