Reviewed by Eric Seidel.

        https://bugs.webkit.org/show_bug.cgi?id=23254
        Upstream page/chromium/

        * page/chromium/AXObjectCacheChromium.cpp: Added.
        (WebCore::AXObjectCache::detachWrapper):
        (WebCore::AXObjectCache::attachWrapper):
        (WebCore::AXObjectCache::postNotification):
        (WebCore::AXObjectCache::postNotificationToElement):
        (WebCore::AXObjectCache::handleFocusedUIElementChanged):
        * page/chromium/AccessibilityObjectChromium.cpp:
        * page/chromium/AccessibilityObjectWrapper.h:
        * page/chromium/ChromeClientChromium.h: Added.
        * page/chromium/DragControllerChromium.cpp: Added.
        (WebCore::DragController::dragOperation):
        (WebCore::DragController::isCopyKeyDown):
        (WebCore::DragController::maxDragImageSize):
        (WebCore::DragController::cleanupAfterSystemDrag):
        * page/chromium/EventHandlerChromium.cpp: Added.
        (WebCore::EventHandler::passMousePressEventToSubframe):
        (WebCore::EventHandler::passMouseMoveEventToSubframe):
        (WebCore::EventHandler::passMouseReleaseEventToSubframe):
        (WebCore::EventHandler::passWheelEventToWidget):
        (WebCore::EventHandler::passWidgetMouseDownEventToWidget):
        (WebCore::EventHandler::passMouseDownEventToWidget):
        (WebCore::EventHandler::tabsToAllControls):
        (WebCore::EventHandler::eventActivatedView):
        (WebCore::EventHandler::createDraggingClipboard):
        (WebCore::EventHandler::focusDocumentView):
        (WebCore::EventHandler::accessKeyModifiers):
        * page/chromium/FrameChromium.cpp: Added.
        (WebCore::computePageRectsForFrame):
        (WebCore::Frame::dragImageForSelection):
        * page/chromium/FrameChromium.h: Added.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@39829 268f45cc-cd09-0410-ab3c-d52691b4dbfc