Manually add failure expectations for imported webdriver/ changes

The importer is blocked and can't automatically suppress the new tests:
  https://ci.chromium.org/ui/p/chromium/builders/try/linux-blink-rel/88627/overview

Bug: 626703, 1414565, 1412527
Change-Id: I0499d19c3ddb0ab8a3ac776b0eff3adf0b27a6ae
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4338522
Auto-Submit: Jonathan Lee <jonathanjlee@google.com>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1117251}

third_party/blink/web_tests/WebDriverExpectations

@@ -169,6 +169,9 @@ crbug.com/626703 [ Linux ] external/wpt/webdriver/tests/take_element_screenshot/
 crbug.com/626703 [ Linux ] external/wpt/webdriver/tests/take_element_screenshot/screenshot.py>>test_no_such_element_from_other_window_handle[open] [ Failure ]
 
 # ====== New tests from wpt-importer added here ======
+crbug.com/626703 [ Linux ] external/wpt/webdriver/tests/print/background.py>>test_background[False-iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAC0lEQVQIW2P4DwQACfsD/Z8fLAAAAAAASUVORK5CYII=] [ Failure ]
+crbug.com/626703 [ Linux ] external/wpt/webdriver/tests/print/background.py>>test_background[None-iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAC0lEQVQIW2P4DwQACfsD/Z8fLAAAAAAASUVORK5CYII=] [ Failure ]
+crbug.com/626703 [ Linux ] external/wpt/webdriver/tests/print/background.py>>test_background[True-iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVQIW2NgYGD4DwABBAEAwS2OUAAAAABJRU5ErkJggg==] [ Failure ]
 crbug.com/626703 [ Linux ] external/wpt/webdriver/tests/element_click/click.py>>test_no_such_element_with_shadow_root [ Failure ]
 crbug.com/626703 [ Linux ] external/wpt/webdriver/tests/element_send_keys/send_keys.py>>test_no_such_element_with_shadow_root [ Failure ]
 crbug.com/626703 [ Linux ] external/wpt/webdriver/tests/execute_async_script/arguments.py>>test_no_such_element_from_other_frame[closed] [ Failure ]