Fix Crypto.getRandomValues to modify its argument, fix tests

tests/co19/co19-dartium.status

Index: tests/co19/co19-dartium.status
diff --git a/tests/co19/co19-dartium.status b/tests/co19/co19-dartium.status
index 97a9853c8c1b57d82a2cd531c86b8e2224c51627..1a70ff7c94b4645ca6a2463560428060f2a49679 100644
--- a/tests/co19/co19-dartium.status
+++ b/tests/co19/co19-dartium.status
@@ -12,7 +12,6 @@ LayoutTests/fast/writing-mode/vertical-inline-block-hittest_t01: Pass, RuntimeEr
 LayoutTests/fast/writing-mode/flipped-blocks-hit-test-overflow_t01: Pass, RuntimeError # Issue 21605
 
 [ $compiler == none && $runtime == dartium ]
-LayoutTests/fast/canvas/canvas-lineDash-input-sequence_t01: RuntimeError # Dartium JSInterop failure
 LayoutTests/fast/dom/StyleSheet/css-medialist-item_t01: RuntimeError # Dartium JSInterop failure
 LayoutTests/fast/dom/navigatorcontentutils/is-protocol-handler-registered_t01: RuntimeError # Dartium JSInterop failure
 LayoutTests/fast/dom/navigatorcontentutils/unregister-protocol-handler_t01: RuntimeError # Dartium JSInterop failure
@@ -21,6 +20,7 @@ LayoutTests/fast/xpath/4XPath/Core/test_parser_t01: RuntimeError # Dartium JSInt
 LayoutTests/fast/xpath/py-dom-xpath/abbreviations_t01: RuntimeError # Dartium JSInterop failure
 LayoutTests/fast/xpath/py-dom-xpath/axes_t01: RuntimeError # Dartium JSInterop failure
 LayoutTests/fast/dom/custom/element-type_t01: RuntimeError # Dartium JsInterop failure (element upgrade)
+WebPlatformTest/shadow-dom/events/retargeting-focus-events/test-001_t01: Pass, RuntimeError # Flaky with Dartium JsInterop. Seems like timing issues in the test.
 
 [ $compiler == none && $runtime == dartium && $checked ]
 LayoutTests/fast/css/style-scoped/style-scoped-scoping-nodes-different-order_t01: RuntimeError # Dartium JSInterop failure