Add 'colno' attribute to ErrorEvent interface

LayoutTests/fast/workers/worker-script-error-expected.txt

Index: LayoutTests/fast/workers/worker-script-error-expected.txt
diff --git a/LayoutTests/fast/workers/worker-script-error-expected.txt b/LayoutTests/fast/workers/worker-script-error-expected.txt
index c4d841793f457709b1fb74fe10ab6f8d4a0e88e1..46442ab850a0add7a29b341a243fec6462f50f52 100644
--- a/LayoutTests/fast/workers/worker-script-error-expected.txt
+++ b/LayoutTests/fast/workers/worker-script-error-expected.txt
@@ -2,13 +2,13 @@ CONSOLE MESSAGE: line 10: Uncaught ReferenceError: foo is not defined
 Test Worker script error handling functionality. Should print a series of PASS messages, followed with DONE.
 
 PASS: onerror invoked for a script that has invalid syntax.
-PASS: onerror invoked for a script that has script error 'Uncaught ReferenceError: foo is not defined' at line 1.
-PASS: event listener invoked for a script that has script error 'Uncaught ReferenceError: foo is not defined' at line 1.
-PASS: onerror invoked for a script that has script error 'Uncaught ReferenceError: foo is not defined' at line 7.
-PASS: onerror invoked for a script that has script error 'Uncaught ReferenceError: bar is not defined' at line 3.
+PASS: onerror invoked for a script that has script error 'Uncaught ReferenceError: foo is not defined' at line 1 and column 0.
+PASS: event listener invoked for a script that has script error 'Uncaught ReferenceError: foo is not defined' at line 1 and column 0.
+PASS: onerror invoked for a script that has script error 'Uncaught ReferenceError: foo is not defined' at line 7 and column 0.
+PASS: onerror invoked for a script that has script error 'Uncaught ReferenceError: bar is not defined' at line 3 and column 4.
 message from worker: "PASS: onerror in worker context invoked for a script that has script error 'Uncaught ReferenceError: foo is not defined' at line 10 in worker-script-error-bubbled.js".
-PASS: onerror invoked for a script that has script error 'Uncaught ReferenceError: foo is not defined' at line 10.
-PASS: onerror invoked for a script that has script error 'Uncaught ReferenceError: foo is not defined' at line 10.
+PASS: onerror invoked for a script that has script error 'Uncaught ReferenceError: foo is not defined' at line 10 and column 0.
+PASS: onerror invoked for a script that has script error 'Uncaught ReferenceError: foo is not defined' at line 10 and column 0.
 PASS: message received from WorkerGlobalScope.onerror: onerror invoked for a script that has script error 'Uncaught ReferenceError: foo is not defined' at line 7:10.
 PASS: onerror invoked for an exception in setTimeout callback.
 DONE