[InputEvent] Support |deleteByCut|&|insertFromPaste| with |dataTransfer| field

third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp

 /*
  * Copyright (C) 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 172 matching lines @@
     DCHECK(isTopLevelCommand() || !m_composition);
 }
 
 bool CompositeEditCommand::apply()
 {
     if (!endingSelection().isContentRichlyEditable()) {
         switch (inputType()) {
         case InputEvent::InputType::InsertText:
         case InputEvent::InputType::InsertLineBreak:
         case InputEvent::InputType::InsertParagraph:
+        case InputEvent::InputType::InsertFromPaste:
         case InputEvent::InputType::DeleteComposedCharacterForward:
         case InputEvent::InputType::DeleteComposedCharacterBackward:
         case InputEvent::InputType::DeleteWordBackward:
         case InputEvent::InputType::DeleteWordForward:
         case InputEvent::InputType::DeleteLineBackward:
         case InputEvent::InputType::DeleteLineForward:
         case InputEvent::InputType::DeleteContentBackward:
         case InputEvent::InputType::DeleteContentForward:
-        case InputEvent::InputType::Paste:
+        case InputEvent::InputType::DeleteByCut:
         case InputEvent::InputType::Drag:
         case InputEvent::InputType::SetWritingDirection:
-        case InputEvent::InputType::Cut:
         case InputEvent::InputType::None:
             break;
         default:
             NOTREACHED();
             return false;
         }
     }
     ensureComposition();
 
     // Changes to the document may have been made since the last editing operation that require a layout, as in <rdar://problem/5658603>.
@@ skipping 1439 matching lines @@
 }
 
 DEFINE_TRACE(CompositeEditCommand)
 {
     visitor->trace(m_commands);
     visitor->trace(m_composition);
     EditCommand::trace(visitor);
 }
 
 } // namespace blink