Update test status for webgl extension tests, fix one typo in extension name

tests/html/html.status

Index: tests/html/html.status
diff --git a/tests/html/html.status b/tests/html/html.status
index 590fd9d6303cb6b6143aab2c2181f012f01147e9..da27d619585a5d083e25b3cba67962c122cd14bc 100644
--- a/tests/html/html.status
+++ b/tests/html/html.status
@@ -347,6 +347,12 @@ request_animation_frame_test: Skip # Async test hangs.
 [ $runtime == drt ]
 webgl_extensions_test: Skip # webgl does not work properly on DRT, which is 'headless'.
 
+[ $runtime == dartium && ($system == windows || $system == linux) ]
+webgl_extensions_test: Fail # WebGL extension tests fail on Dartium without graphics. This is dependent on our bot configuration.
+
+[ $runtime == chrome && ($system == windows || $system == linux) ]
+webgl_extensions_test: Fail # WebGL extension tests fail without graphics. This is dependent on our bot configuration.
+
 [ $compiler == dart2js && $csp && ($runtime == drt || $runtime == safari || $runtime == ff || $runtime == chrome || $runtime == chromeOnAndroid) ]
 # Note: these tests are all injecting scripts by design.  This is not allowed under CSP.
 # TODO(sra): Change these tests to use a same-origin JavaScript script file.