[InputEvent] Fire 'beforeinput'/'input' for 6 text styling actions

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

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef InputEvent_h
 #define InputEvent_h
 
 #include "core/dom/StaticRange.h"
 #include "core/events/InputEventInit.h"
 #include "core/events/UIEvent.h"
 
 namespace blink {
 
 class InputEvent final : public UIEvent {
     DEFINE_WRAPPERTYPEINFO();
 
 public:
     static InputEvent* create()
     {
         return new InputEvent;
     }
 
     static InputEvent* create(const AtomicString& type, const InputEventInit& initializer)
     {
         return new InputEvent(type, initializer);
     }
 
     enum class InputType {
         None,
+        // Insertion.
         InsertText,
         ReplaceContent,
+        // Deletion.
         DeleteContent,
         DeleteComposedCharacter,
+        // Misc.
         Undo,
         Redo,
+        // Styling.
+        Bold,
+        Italic,
+        Underline,
+        StrikeThrough,
+        Superscript,
+        Subscript,
 
         // Add new input types immediately above this line.
         NumberOfInputTypes,
     };
 
     enum EventCancelable : bool {
         NotCancelable = false,
         IsCancelable = true,
     };
 
@@ skipping 39 matching lines @@
     explicit InputEventDispatchMediator(InputEvent*);
     InputEvent& event() const;
     DispatchEventResult dispatchEvent(EventDispatcher&) const override;
 };
 
 DEFINE_EVENT_TYPE_CASTS(InputEvent);
 
 } // namespace blink
 
 #endif // InputEvent_h