Addressing post-review comments in r177035

Addressing post-review comments in r177035
https://bugs.webkit.org/show_bug.cgi?id=139557

Patch by Myles C. Maxfield <mmaxfield@apple.com> on 2014-12-15
Reviewed by Darin Adler.

Source/WebCore:

This patch deletes the helper functions rendererBoundingBox() and rendererAnchorRect() and
migrates callers to using renderers directly.

It also improves the comment in RenderElement.h regarding RenderElement::anchorRect().

No new tests because this is simply refactoring.

* WebCore.exp.in: Delete exported symbol for rendererBoundingBox()
* accessibility/AccessibilitySlider.cpp:
(WebCore::AccessibilitySliderThumb::elementRect): Migrate off rendererBoundingBox()
* dom/ContainerNode.cpp:
(WebCore::rendererAnchorRect): Deleted.
* dom/ContainerNode.h:
* dom/Node.cpp:
(WebCore::rendererBoundingBox): Deleted.
* dom/Node.h:
* html/ColorInputType.cpp:
(WebCore::ColorInputType::elementRectRelativeToRootView): Migrate off rendererBoundingBox().
* html/HTMLInputElement.cpp:
(WebCore::HTMLInputElement::setupDateTimeChooserParameters): Ditto.
* html/ValidationMessage.cpp:
(WebCore::ValidationMessage::buildBubbleTree): Ditto.
* page/FrameView.cpp:
(WebCore::FrameView::scrollElementToRect): Migrate off rendererAnchorRect().
(WebCore::FrameView::scrollToAnchor): Ditto.
* page/SpatialNavigation.cpp:
(WebCore::nodeRectInAbsoluteCoordinates): Migrate off rendererBoundingBox().
* rendering/RenderElement.h:

Source/WebKit/mac:

* WebView/WebActionMenuController.mm:
(elementBoundingBoxInWindowCoordinatesFromNode): Migrate off rendererBoundingBox().

Source/WebKit2:

* Shared/WebHitTestResult.cpp:
(WebKit::WebHitTestResult::Data::elementBoundingBoxInWindowCoordinates): Migrate off rendererBoundingBox().
* WebProcess/WebPage/CoordinatedGraphics/WebPageCoordinatedGraphics.cpp:
(WebKit::WebPage::findZoomableAreaForPoint): Ditto.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@177301 268f45cc-cd09-0410-ab3c-d52691b4dbfc