Reviewed by Darin Adler.

        Various editing functions take boolean userTriggered but should be replaced by an enum
        https://bugs.webkit.org/show_bug.cgi?id=62933

        Replaced boolean userTriggered in many functions by new EUserTriggered enum.

        * WebCore.exp.in: FrameSelection::modify's signature changed.
        * accessibility/AccessibilityRenderObject.cpp:
        (WebCore::AccessibilityRenderObject::setSelectedVisiblePositionRange): Calls FrameSelection::moveTo.
        * editing/EditorCommand.cpp:
        (WebCore::executeMoveBackward): Calls FrameSelection::modify.
        (WebCore::executeMoveBackwardAndModifySelection): Ditto.
        (WebCore::executeMoveDown): Ditto.
        (WebCore::executeMoveDownAndModifySelection): Ditto.
        (WebCore::executeMoveForward): Ditto.
        (WebCore::executeMoveForwardAndModifySelection): Ditto.
        (WebCore::executeMoveLeft): Ditto.
        (WebCore::executeMoveLeftAndModifySelection): Ditto.
        (WebCore::executeMovePageDown): Ditto.
        (WebCore::executeMovePageDownAndModifySelection): Ditto.
        (WebCore::executeMovePageUp): Ditto.
        (WebCore::executeMovePageUpAndModifySelection): Ditto.
        (WebCore::executeMoveRight): Ditto.
        (WebCore::executeMoveRightAndModifySelection): Ditto.
        (WebCore::executeMoveToBeginningOfDocument): Ditto.
        (WebCore::executeMoveToBeginningOfDocumentAndModifySelection): Ditto.
        (WebCore::executeMoveToBeginningOfLine): Ditto.
        (WebCore::executeMoveToBeginningOfLineAndModifySelection): Ditto.
        (WebCore::executeMoveToBeginningOfParagraph): Ditto.
        (WebCore::executeMoveToBeginningOfParagraphAndModifySelection): Ditto.
        (WebCore::executeMoveToBeginningOfSentence): Ditto.
        (WebCore::executeMoveToBeginningOfSentenceAndModifySelection): Ditto.
        (WebCore::executeMoveToEndOfDocument): Ditto.
        (WebCore::executeMoveToEndOfDocumentAndModifySelection): Ditto.
        (WebCore::executeMoveToEndOfSentence): Ditto.
        (WebCore::executeMoveToEndOfSentenceAndModifySelection): Ditto.
        (WebCore::executeMoveToEndOfLine): Ditto.
        (WebCore::executeMoveToEndOfLineAndModifySelection): Ditto.
        (WebCore::executeMoveToEndOfParagraph): Ditto.
        (WebCore::executeMoveToEndOfParagraphAndModifySelection): Ditto.
        (WebCore::executeMoveParagraphBackwardAndModifySelection): Ditto.
        (WebCore::executeMoveParagraphForwardAndModifySelection): Ditto.
        (WebCore::executeMoveUp): Ditto.
        (WebCore::executeMoveUpAndModifySelection): Ditto.
        (WebCore::executeMoveWordBackward): Ditto.
        (WebCore::executeMoveWordBackwardAndModifySelection): Ditto.
        (WebCore::executeMoveWordForward): Ditto.
        (WebCore::executeMoveWordForwardAndModifySelection): Ditto.
        (WebCore::executeMoveWordLeft): Ditto.
        (WebCore::executeMoveWordLeftAndModifySelection): Ditto.
        (WebCore::executeMoveWordRight): Ditto.
        (WebCore::executeMoveWordRightAndModifySelection): Ditto.
        (WebCore::executeMoveToLeftEndOfLine): Ditto.
        (WebCore::executeMoveToLeftEndOfLineAndModifySelection): Ditto.
        (WebCore::executeMoveToRightEndOfLine): Ditto.
        (WebCore::executeMoveToRightEndOfLineAndModifySelection): Ditto.
        * editing/FrameSelection.cpp:
        (WebCore::FrameSelection::moveTo): Takes EUserTriggered instead of a boolean.
        (WebCore::FrameSelection::setSelection): Ditto.
        (WebCore::FrameSelection::modify): Ditto.
        (WebCore::FrameSelection::setStart): Ditto.
        (WebCore::FrameSelection::setEnd): Ditto.
        (WebCore::FrameSelection::setBase): Ditto.
        (WebCore::FrameSelection::setExtent): Ditto.
        (WebCore::FrameSelection::selectAll): Ditto.
        (WebCore::FrameSelection::notifyRendererOfSelectionChange): Ditto.
        * editing/FrameSelection.h: Extracted EUserTriggered out of SetSelectionOption; SetSelectionOptions
        now takes the union of values of SetSelectionOption and EUserTriggered.
        (WebCore::FrameSelection::selectionOptionsToUserTriggered): Converts SetSelectionOptions to
        EUserTriggered. 
        * page/DOMSelection.cpp:
        (WebCore::DOMSelection::modify): Calls FrameSelection::modify.
        * page/EventHandler.cpp:
        (WebCore::EventHandler::handleMouseReleaseEvent): Ditto.
        (WebCore::handleKeyboardSelectionMovement): Ditto.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@89293 268f45cc-cd09-0410-ab3c-d52691b4dbfc