Remove unnecessary #include SVGResourcesCache.h in SVGDocumentExtensions.h; use forwa...

Remove unnecessary #include SVGResourcesCache.h in SVGDocumentExtensions.h; use forward declaration
https://bugs.webkit.org/show_bug.cgi?id=72335

Patch by Daniel Bates <dbates@rim.com> on 2011-11-14
Reviewed by Eric Seidel.

It's sufficient to forward declare SVGResourcesCache in SVGDocumentExtensions.h and #include SVGResourcesCache.h
in SVGDocumentExtensions.cpp. This will reduce the number of files we need to re-compile after the file
SVGResourcesCache.h has been modified. Currently we #include SVGResourcesCache.h in SVGDocumentExtensions.h.

* rendering/svg/RenderSVGBlock.cpp: Include SVGResourcesCache.h.
* rendering/svg/RenderSVGContainer.cpp: Ditto.
* rendering/svg/RenderSVGForeignObject.cpp: Ditto.
* rendering/svg/RenderSVGImage.cpp: Ditto.
* rendering/svg/RenderSVGInline.cpp: Ditto.
* rendering/svg/RenderSVGModelObject.cpp: Ditto.
* rendering/svg/RenderSVGPath.cpp: Ditto.
* rendering/svg/RenderSVGResource.cpp: Ditto.
* rendering/svg/RenderSVGResourceClipper.cpp: Ditto.
* rendering/svg/RenderSVGResourceContainer.cpp: Ditto.
* rendering/svg/RenderSVGRoot.cpp: Ditto.
* rendering/svg/RenderSVGText.cpp: Ditto.
* rendering/svg/SVGInlineTextBox.cpp: Ditto.
* rendering/svg/SVGRenderSupport.cpp: Ditto.
* svg/SVGDocumentExtensions.cpp: Ditto.
* svg/SVGDocumentExtensions.h: Forward declare SVGResourcesCache.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@100225 268f45cc-cd09-0410-ab3c-d52691b4dbfc