Bug 1539650 [wpt PR 16084] - Extend canvas getContextAttributes WPTes…

…t, a=testonly

Automatic update from web-platform-tests
Extend canvas getContextAttributes WPTest

This CL extend the WPTest for Canvas getContextAttributes to include
the |desynchronized|.

This CL covers the flag WPT test extension mentioned in
whatwg/html#4360 (which addressed
whatwg/html#4087).

Bug: 944199, 945835
Change-Id: Ibb339c66014d7579023f75c7f2cef99e3f03d351
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1538491
Reviewed-by: Fernando Serboncini <fserbchromium.org>
Commit-Queue: Miguel Casas <mcasaschromium.org>
Cr-Commit-Position: refs/heads/master{#644332}

--

wpt-commits: c3f8e5c0bb15e7d7f57dbe60f6869caa0c4ad2e7
wpt-pr: 16084

UltraBlame original commit: f0294cf3eb4247c971f3860ff55bcdfd36029b05

testing/web-platform/tests/2dcontext/context-attributes/getContextAttributes.html

@@ -59,6 +59,9 @@
 alpha
 :
 true
+desynchronized
+:
+false
 }
 }
 {
@@ -115,6 +118,33 @@
 false
 }
 }
+{
+testDescription
+:
+"
+Test
+context
+creation
+attributes
+desynchronized
+:
+false
+"
+canvasContextAttributes
+:
+{
+desynchronized
+:
+false
+}
+expectedContextAttributes
+:
+{
+desynchronized
+:
+false
+}
+}
 ]
 ;
 function
@@ -168,6 +198,19 @@
 (
 )
 ;
+if
+(
+testScenario
+.
+expectedContextAttributes
+.
+alpha
+!
+=
+=
+undefined
+)
+{
 assert_equals
 (
 contextAttributes
@@ -181,6 +224,33 @@
 )
 ;
 }
+if
+(
+testScenario
+.
+expectedContextAttributes
+.
+desynchronized
+!
+=
+=
+undefined
+)
+{
+assert_equals
+(
+contextAttributes
+.
+desynchronized
+testScenario
+.
+expectedContextAttributes
+.
+desynchronized
+)
+;
+}
+}
 testScenario
 .
 testDescription