Reviewed by Tony Chang.

        https://bugs.webkit.org/show_bug.cgi?id=43778
        Dropping should fire textInput event.

        * editing/pasteboard/drop-text-events-expected.txt: Added.
        * editing/pasteboard/drop-text-events-sideeffect-expected.txt: Added.
        * editing/pasteboard/drop-text-events-sideeffect.html: Added.
        * editing/pasteboard/drop-text-events.html: Added.
        * editing/pasteboard/script-tests/drop-text-events-sideeffect.js: Added.
        * editing/pasteboard/script-tests/drop-text-events.js: Added.
2010-08-13  MORITA Hajime  <morrita@google.com>

        Reviewed by Tony Chang.

        https://bugs.webkit.org/show_bug.cgi?id=43778
        Dropping should fire textInput event

        This change:
        - added TextEvent::m_isDrop to distinguish drop-initiated events.
        - added to dispatch TextEvent from DragController before making a side effect
          and cancel the side effect if the event prevents default

        Tests: editing/pasteboard/drop-text-events-sideeffect.html
               editing/pasteboard/drop-text-events.html

        * dom/TextEvent.cpp:
        (WebCore::TextEvent::createForDrop): Added.
        (WebCore::TextEvent::TextEvent):
        * dom/TextEvent.h:
        (WebCore::TextEvent::isDrop): Added.
        * editing/Editor.cpp:
        (WebCore::Editor::handleTextEvent):
        (WebCore::Editor::findEventTargetFrom): Extracted from findEventTargetFromSelection().
        (WebCore::Editor::findEventTargetFromSelection):
        * editing/Editor.h:
        * page/DragController.cpp:
        (WebCore::DragController::dispatchTextInputEventFor): Added.
        (WebCore::DragController::concludeEditDrag): Added an event dispatch path.
        * page/DragController.h:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@65395 268f45cc-cd09-0410-ab3c-d52691b4dbfc