[InputEvent] Fire 'beforeinput' during typing, pressing hot keys and IME composition

third_party/WebKit/Source/core/events/InputEvent.cpp

Index: third_party/WebKit/Source/core/events/InputEvent.cpp
diff --git a/third_party/WebKit/Source/core/events/InputEvent.cpp b/third_party/WebKit/Source/core/events/InputEvent.cpp
index f7eb07a65d040c9cb0071ccc8a29dc660983bf09..5ace994f4b4bceafe3e1c958655d7bd3026dcefe 100644
--- a/third_party/WebKit/Source/core/events/InputEvent.cpp
+++ b/third_party/WebKit/Source/core/events/InputEvent.cpp
@@ -15,6 +15,36 @@ InputEvent::InputEvent()
 InputEvent::InputEvent(const AtomicString& type, const InputEventInit& initializer)
     : UIEvent(type, initializer)
 {
+    if (initializer.hasInputType())
+        m_inputType = initializer.inputType();
+    if (initializer.hasData())
+        m_data = initializer.data();
+}
+
+/* static */
+PassRefPtrWillBeRawPtr<InputEvent> InputEvent::createBeforeInput(const String& inputType, const String& data)
+{
+    InputEventInit inputEventInit;
+
+    inputEventInit.setBubbles(true);
+    inputEventInit.setCancelable(false);
+    inputEventInit.setInputType(inputType);
+    inputEventInit.setData(data);
+
+    return InputEvent::create(EventTypeNames::beforeinput, inputEventInit);
+}
+
+/* static */
+PassRefPtrWillBeRawPtr<InputEvent> InputEvent::createCancelableBeforeInput(const String& inputType, const String& data)
+{
+    InputEventInit inputEventInit;
+
+    inputEventInit.setBubbles(true);
+    inputEventInit.setCancelable(true);
+    inputEventInit.setInputType(inputType);
+    inputEventInit.setData(data);
+
+    return InputEvent::create(EventTypeNames::beforeinput, inputEventInit);
 }
 
 bool InputEvent::isInputEvent() const