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

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

Index: third_party/WebKit/Source/core/events/InputEvent.h
diff --git a/third_party/WebKit/Source/core/events/InputEvent.h b/third_party/WebKit/Source/core/events/InputEvent.h
index f6c46ae58d23d1c655b4c72059353d8d97b9a273..7adcb269e5e765c22b32440c98f2df78edf5ea51 100644
--- a/third_party/WebKit/Source/core/events/InputEvent.h
+++ b/third_party/WebKit/Source/core/events/InputEvent.h
@@ -24,6 +24,18 @@ public:
         return adoptRefWillBeNoop(new InputEvent(type, initializer));
     }
 
+    enum class InputType {
+        InsertText,
+        ReplaceText,
+    };
+
+    static PassRefPtrWillBeRawPtr<InputEvent> createBeforeInputTyping(InputType, const String& data);
+    static PassRefPtrWillBeRawPtr<InputEvent> createBeforeInputCompositionUpdate(InputType, const String& data);
+    static PassRefPtrWillBeRawPtr<InputEvent> createBeforeInputEditorCommand(const String& commandName, const String& data);
+
+    const String& inputType() const { return m_inputType; }
+    const String& data() const { return m_data; }
+
     bool isInputEvent() const override;
 
     DECLARE_VIRTUAL_TRACE();
@@ -31,6 +43,9 @@ public:
 private:
     InputEvent();
     InputEvent(const AtomicString&, const InputEventInit&);
+
+    String m_inputType;
+    String m_data;
 };
 
 DEFINE_EVENT_TYPE_CASTS(InputEvent);