https://bugs.webkit.org/show_bug.cgi?id=120561

Reviewed by Andreas Kling.

New names are more descriptive and consistent. They also put related iterator files close by in file lists.
The types are always used with auto so longer names don't make them any clumsier to use.

For simplicity included all Element iterator types from ElementIterator.h so it is the only file that has
to be included by the clients.

* GNUmakefile.list.am:
* Target.pri:
* WebCore.vcxproj/WebCore.vcxproj:
* WebCore.xcodeproj/project.pbxproj:
* accessibility/AccessibilityNodeObject.cpp:
* accessibility/AccessibilityRenderObject.cpp:
* accessibility/AccessibilityTable.cpp:
* css/CSSFontFaceSource.cpp:
* dom/ChildIterator.h: Removed.
* dom/DescendantIterator.h: Removed.
* dom/Document.cpp:
* dom/ElementChildIterator.h: Copied from Source/WebCore/dom/ChildIterator.h.
(WebCore::::ElementChildIterator):
(WebCore::::operator):
(WebCore::::ElementChildConstIterator):
(WebCore::::ElementChildIteratorAdapter):
(WebCore::::begin):
(WebCore::::end):
(WebCore::::ElementChildConstIteratorAdapter):
(WebCore::elementChildren):
(WebCore::childrenOfType):
* dom/ElementDescendantIterator.h: Copied from Source/WebCore/dom/DescendantIterator.h.
(WebCore::::ElementDescendantIterator):
(WebCore::::operator):
(WebCore::::ElementDescendantConstIterator):
(WebCore::::ElementDescendantIteratorAdapter):
(WebCore::::begin):
(WebCore::::end):
(WebCore::::ElementDescendantConstIteratorAdapter):
(WebCore::elementDescendants):
(WebCore::descendantsOfType):
* dom/ElementIterator.h:
* dom/Node.cpp:
* dom/TreeScope.cpp:
* editing/ApplyStyleCommand.cpp:
* editing/markup.cpp:
* html/HTMLAppletElement.cpp:
* html/HTMLFieldSetElement.cpp:
* html/HTMLLabelElement.cpp:
* html/HTMLMapElement.cpp:
* html/HTMLMediaElement.cpp:
* html/HTMLObjectElement.cpp:
* loader/PlaceholderDocument.cpp:
* rendering/FilterEffectRenderer.cpp:
* style/StyleResolveTree.cpp:
* svg/SVGElement.cpp:
* svg/SVGSVGElement.cpp:
* svg/animation/SMILTimeContainer.cpp:
* svg/graphics/SVGImage.cpp:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@154928 268f45cc-cd09-0410-ab3c-d52691b4dbfc