Update expectations to green the tree.

-Add flaky tests from https://codereview.chromium.org/262963003.
A revert would be tricky.
-Rebaseline fast/transforms/shadows.html as a followup to
https://codereview.chromium.org/279513002.
-Add a flaky imports test.

TBR=loislo@chromium.org,enne@chromium.org,morrita@chromium.org

Review URL: https://codereview.chromium.org/279663002

git-svn-id: svn://svn.chromium.org/blink/trunk@173698 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/LayoutTests/TestExpectations

@@ -1455,6 +1455,15 @@ crbug.com/367814 [ Win Debug ] fast/dom/custom/document-register-reentrant-throw
 crbug.com/361729 fast/multicol/pagination-h-horizontal-bt.html [ Pass Failure ]
 crbug.com/361729 fast/multicol/pagination-h-horizontal-tb.html [ Pass Failure ]
 
+crbug.com/371651 svg/custom/deep-dynamic-updates.svg [ Pass Failure ]
+crbug.com/371651 svg/custom/js-update-gradient.svg [ Pass Failure ]
+crbug.com/371651 svg/custom/js-update-pattern.svg [ Pass Failure ]
+crbug.com/371651 svg/custom/js-update-pattern-child.svg [ Pass Failure ]
+crbug.com/371651 svg/custom/js-update-stop.svg [ Pass Failure ]
+crbug.com/371651 svg/custom/js-update-stop-linked-gradient.svg [ Pass Failure ]
+
+crbug.com/371654 fast/html/imports/import-custom-element-dup-resolve.html [ Pass Failure ]
+
 crbug.com/367903 web-animations-api/timeline-time.html [ Pass Failure ]
 
 # Started failing with v8 roll in chromium r267851.