Pass column as 4th argument to WorkerGlobalScope.onerror handler

Source/core/workers/WorkerMessagingProxy.cpp

Index: Source/core/workers/WorkerMessagingProxy.cpp
diff --git a/Source/core/workers/WorkerMessagingProxy.cpp b/Source/core/workers/WorkerMessagingProxy.cpp
index 99bfc59c0872211636b16a4def684ad4a5ce5f9f..32a02cb1eeea5549dff153f003c8971e9a1bd326 100644
--- a/Source/core/workers/WorkerMessagingProxy.cpp
+++ b/Source/core/workers/WorkerMessagingProxy.cpp
@@ -113,15 +113,16 @@ private:
 
 class WorkerExceptionTask : public ScriptExecutionContext::Task {
 public:
-    static PassOwnPtr<WorkerExceptionTask> create(const String& errorMessage, int lineNumber, const String& sourceURL, WorkerMessagingProxy* messagingProxy)
+    static PassOwnPtr<WorkerExceptionTask> create(const String& errorMessage, int lineNumber, int columnNumber, const String& sourceURL, WorkerMessagingProxy* messagingProxy)
     {
-        return adoptPtr(new WorkerExceptionTask(errorMessage, lineNumber, sourceURL, messagingProxy));
+        return adoptPtr(new WorkerExceptionTask(errorMessage, lineNumber, columnNumber, sourceURL, messagingProxy));
     }
 
 private:
-    WorkerExceptionTask(const String& errorMessage, int lineNumber, const String& sourceURL, WorkerMessagingProxy* messagingProxy)
+    WorkerExceptionTask(const String& errorMessage, int lineNumber, int columnNumber, const String& sourceURL, WorkerMessagingProxy* messagingProxy)
         : m_errorMessage(errorMessage.isolatedCopy())
         , m_lineNumber(lineNumber)
+        , m_columnNumber(columnNumber)
         , m_sourceURL(sourceURL.isolatedCopy())
         , m_messagingProxy(messagingProxy)
     {
@@ -136,13 +137,14 @@ private:
         // We don't bother checking the askedToTerminate() flag here, because exceptions should *always* be reported even if the thread is terminated.
         // This is intentionally different than the behavior in MessageWorkerTask, because terminated workers no longer deliver messages (section 4.6 of the WebWorker spec), but they do report exceptions.
 
-        bool errorHandled = !workerObject->dispatchEvent(ErrorEvent::create(m_errorMessage, m_sourceURL, m_lineNumber));
+        bool errorHandled = !workerObject->dispatchEvent(ErrorEvent::create(m_errorMessage, m_sourceURL, m_lineNumber, m_columnNumber));
         if (!errorHandled)
-            context->reportException(m_errorMessage, m_lineNumber, m_sourceURL, 0);
+            context->reportException(m_errorMessage, m_lineNumber, m_columnNumber, m_sourceURL, 0);
     }
 
     String m_errorMessage;
     int m_lineNumber;
+    int m_columnNumber;
     String m_sourceURL;
     WorkerMessagingProxy* m_messagingProxy;
 };
@@ -305,9 +307,9 @@ void WorkerMessagingProxy::postTaskToLoader(PassOwnPtr<ScriptExecutionContext::T
     m_scriptExecutionContext->postTask(task);
 }
 
-void WorkerMessagingProxy::postExceptionToWorkerObject(const String& errorMessage, int lineNumber, const String& sourceURL)
+void WorkerMessagingProxy::postExceptionToWorkerObject(const String& errorMessage, int lineNumber, int columnNumber, const String& sourceURL)
 {
-    m_scriptExecutionContext->postTask(WorkerExceptionTask::create(errorMessage, lineNumber, sourceURL, this));
+    m_scriptExecutionContext->postTask(WorkerExceptionTask::create(errorMessage, lineNumber, columnNumber, sourceURL, this));
 }
 
 static void postConsoleMessageTask(ScriptExecutionContext* context, WorkerMessagingProxy* messagingProxy, MessageSource source, MessageLevel level, const String& message, unsigned lineNumber, const String& sourceURL)