fast/canvas/webgl/oes-vertex-array-object.html

Description:
This test is failing on iOS wk2. It appears to have a regression point of r256784. There are other failures back at r256173, and below, but they have a different diff.

History:
https://results.webkit.org/?suite=layout-tests&test=fast%2Fcanvas%2Fwebgl%2Foes-vertex-array-object.html&platform=ios&limit=50000


Diff:
--- /Volumes/Data/slave/ios-simulator-13-debug-tests-wk2/build/layout-test-results/fast/canvas/webgl/oes-vertex-array-object-expected.txt
+++ /Volumes/Data/slave/ios-simulator-13-debug-tests-wk2/build/layout-test-results/fast/canvas/webgl/oes-vertex-array-object-actual.txt
@@ -36,6 +36,9 @@
 PASS Draw 1 passed pixel test
 PASS Draw 2 passed pixel test
 Testing using deleted buffers referenced by VAOs
+FAIL buffer removed too early
+FAIL buffer removed too early
+FAIL buffer removed too early
 PASS should be 255,0,0,255
 PASS should be 0,255,0,255
 PASS should be 0,0,255,255
@@ -46,6 +49,7 @@
 PASS getError was expected value: NO_ERROR : there should be no errors
 
 PASS successfullyParsed is true
+Some tests failed.
 
 TEST COMPLETE