[DevTools] Switch from blink-based to content-based touch emulation.

Source/core/frame/FrameView.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Dirk Mueller <mueller@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
@@ skipping 1318 matching lines @@
 }
 
 IntPoint FrameView::lastKnownMousePosition() const
 {
     return m_frame->eventHandler().lastKnownMousePosition();
 }
 
 bool FrameView::shouldSetCursor() const
 {
     Page* page = frame().page();
-    return page && page->visibilityState() != PageVisibilityStateHidden && page->focusController().isActive();
+    return page && page->visibilityState() != PageVisibilityStateHidden && page->focusController().isActive() && page->settings().deviceSupportsMouse();
 }
 
 void FrameView::scrollContentsIfNeededRecursive()
 {
     scrollContentsIfNeeded();
 
     for (LocalFrame* child = m_frame->tree().firstChild(); child; child = child->tree().nextSibling()) {
         if (FrameView* view = child->view())
             view->scrollContentsIfNeededRecursive();
     }
@@ skipping 1837 matching lines @@
 
 AXObjectCache* FrameView::axObjectCache() const
 {
     if (frame().document())
         return frame().document()->existingAXObjectCache();
     return 0;
 }
 
 void FrameView::setCursor(const Cursor& cursor)
 {
+    if (!shouldSetCursor())
+        return;
     Page* page = frame().page();
     if (!page)
         return;
     page->chrome().setCursor(cursor);
 }
 
 void FrameView::frameRectsChanged()
 {
     if (layoutSizeFixedToFrameSize())
         setLayoutSizeInternal(frameRect().size());
@@ skipping 20 matching lines @@
 void FrameView::willRemoveScrollbar(Scrollbar* scrollbar, ScrollbarOrientation orientation)
 {
     ScrollableArea::willRemoveScrollbar(scrollbar, orientation);
     if (AXObjectCache* cache = axObjectCache()) {
         cache->remove(scrollbar);
         cache->handleScrollbarUpdate(this);
     }
 }
 
 } // namespace WebCore