Introducing ClipboardEvent Constructor

Source/core/events/ClipboardEvent.cpp

Index: Source/core/events/ClipboardEvent.cpp
diff --git a/Source/core/events/ClipboardEvent.cpp b/Source/core/events/ClipboardEvent.cpp
index 22992c3ec0003cbf721a7f75cc516b4f503e4714..f857fc566babeeea7c030a0131b8cbd0c4bc8cfa 100644
--- a/Source/core/events/ClipboardEvent.cpp
+++ b/Source/core/events/ClipboardEvent.cpp
@@ -22,6 +22,7 @@
 
 #include "config.h"
 #include "core/events/ClipboardEvent.h"
+#include "core/clipboard/DataObject.h"
 
 namespace blink {
 
@@ -34,6 +35,19 @@ ClipboardEvent::ClipboardEvent(const AtomicString& eventType, bool canBubble, bo
 {
 }
 
+ClipboardEvent::ClipboardEvent(const AtomicString& type, const ClipboardEventInit& initializer)
+    : Event(type, initializer)
+{
+    DataTransferAccessPolicy policy = DataTransferNumb;
+
+    if (type == EventTypeNames::copy || type == EventTypeNames::cut || type == EventTypeNames::paste)
+        policy = DataTransferWritable;
+
+    m_clipboardData = DataTransfer::create(DataTransfer::CopyAndPaste, policy, DataObject::create());
+    if (initializer.hasDataType())
+        m_clipboardData->setData(initializer.dataType(), initializer.data());
+}
+
 ClipboardEvent::~ClipboardEvent()
 {
 }