Update DateView case in fast/js/constructor-length

Update and unskip fast/js/constructor-length.html now that V8
has been updated to reflect the spec change on DateView.length.

See https://chromium-review.googlesource.com/c/chromium/src/+/1097455

Bug: v8:7816
Change-Id: Ife1c177d1bd177b5a51371ce8c719c9b754d5ad0
Reviewed-on: https://chromium-review.googlesource.com/1099357
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#567967}

third_party/WebKit/LayoutTests/TestExpectations

@@ -4699,9 +4699,6 @@ crbug.com/850202 [ Linux ] http/tests/devtools/network/network-filters.js [ Pass
 crbug.com/851746 [ Linux ] fast/canvas/color-space/canvas-colorManaged-convertToBlob-roundtrip.html [ Pass Timeout ]
 crbug.com/851746 [ Linux ] virtual/gpu/fast/canvas/color-space/canvas-colorManaged-convertToBlob-roundtrip.html [ Pass Timeout ]
 
-# Update the DataView case when crbug.com/v8/7816 is fixed
-crbug.com/v8/7816 fast/js/constructor-length.html [ Skip ]
-
 crbug.com/853360 [ Mac ] external/wpt/accelerometer/Accelerometer-iframe-access.https.html [ Failure ]
 crbug.com/853360 [ Mac ] fast/css/input-search-padding.html [ Failure ]
 crbug.com/853360 [ Mac ] fast/forms/calendar-picker/calendar-picker-appearance-ar.html [ Failure ]

third_party/WebKit/LayoutTests/fast/js/constructor-length-expected.txt

@@ -10,7 +10,7 @@ PASS CloseEvent.length is 1
 PASS CustomEvent.length is 1
 FAIL DOMFormData.length should be 0. Threw exception ReferenceError: DOMFormData is not defined
 PASS DOMParser.length is 0
-PASS DataView.length is 3
+PASS DataView.length is 1
 PASS ErrorEvent.length is 1
 PASS Event.length is 1
 PASS EventSource.length is 1

third_party/WebKit/LayoutTests/fast/js/constructor-length.html

@@ -14,7 +14,7 @@ shouldBe('CloseEvent.length', '1');
 shouldBe('CustomEvent.length', '1');
 shouldBe('DOMFormData.length', '0');
 shouldBe('DOMParser.length', '0');
-shouldBe('DataView.length', '3');
+shouldBe('DataView.length', '1');
 shouldBe('ErrorEvent.length', '1');
 shouldBe('Event.length', '1');
 shouldBe('EventSource.length', '1');