- fix http://bugs.webkit.org/show_bug.cgi?id=12103
          LEAK: Fix the leaking ImageBuffer buffers on TOT

        * ksvg2/svg/SVGMaskElement.h:
        * ksvg2/svg/SVGMaskElement.cpp:
        (WebCore::SVGMaskElement::drawMaskerContent):
        Changed to return auto_ptr since it returns a newly-created ImageBuffer.

        * ksvg2/svg/SVGPatternElement.cpp:
        (WebCore::SVGPatternElement::buildPattern):
        Changed to use auto_ptr since ImageBuffer::create now returns one.

        * platform/graphics/GraphicsContext.h: Removed the include of ImageBuffer.h,
        which was never needed, and the declaration of createImageBuffer, which is
        now a class member function of ImageBuffer.

        * platform/graphics/ImageBuffer.h: Replaced the constructor with a create
        function. Added a comment about the need to move renderSubtreeToImage
        elsewhere. Added an m_data member to store the data so it can be deleted
        when the object is done, made the m_size member non-platform-specific.
        Added a private constructor for use to create the CG version.

        * platform/graphics/cg/GraphicsContextCG.cpp: Removed
        GraphicsContext::createImageBuffer.

        * platform/graphics/cg/ImageBufferCG.cpp:
        (WebCore::ImageBuffer::create): Added. Replaces the old
        GraphicsContext::createImageBuffer function.
        (WebCore::ImageBuffer::ImageBuffer): Added m_data and m_context.
        (WebCore::ImageBuffer::~ImageBuffer): Added a fastFree of the data and got
        rid of the unneeded null check before calling CGImageRelease.

        * platform/graphics/svg/SVGPaintServerGradient.h: Removed the include of
        ImageBuffer.h and declared the ImageBuffer class instead.

        * platform/graphics/svg/SVGPaintServerPattern.h: Removed the include of
        ImageBuffer.h and declared the ImageBuffer class instead, and changed setTile
        to take an auto_ptr since it takes ownership of the ImageBuffer.
        * platform/graphics/svg/SVGPaintServerPattern.cpp:
        (WebCore::SVGPaintServerPattern::setTile): Ditto.

        * platform/graphics/svg/SVGResourceMasker.h: Removed the include of
        ImageBuffer.h and declared the ImageBuffer class instead, and changed setMask
        to take an auto_ptr since it takes ownership of the ImageBuffer.
        * platform/graphics/svg/SVGResourceMasker.cpp:
        (WebCore::SVGResourceMasker::setMask): Ditto.

        * platform/graphics/svg/cg/SVGPaintServerGradientCg.cpp:
        (WebCore::SVGPaintServerGradient::setup): Updated to use auto_ptr.

        * platform/graphics/svg/cg/SVGPaintServerPatternCg.cpp: Updated includes.

        * platform/graphics/svg/cg/SVGResourceMaskerCg.mm:
        (WebCore::SVGResourceMasker::applyMask): Updated to use auto_ptr.

        - other changes

        * ksvg2/svg/SVGAnimateTransformElement.cpp:
        (WebCore::SVGAnimateTransformElement::handleStartCondition):
        Remove unused variables.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@18641 268f45cc-cd09-0410-ab3c-d52691b4dbfc