Make -webkit-color-correction work with shadows

Reviewed by Simon Fraser.

From canvas, just send DeviceColorSpace to setShadow() for now. 
Will fix soon when I address https://bugs.webkit.org/show_bug.cgi?id=31319
* html/canvas/CanvasRenderingContext2D.cpp:
(WebCore::CanvasRenderingContext2D::setShadow):
(WebCore::CanvasRenderingContext2D::applyShadow):

setShadow() and setPlatformShadow() now take a ColorSpace.
* platform/graphics/GraphicsContext.cpp:
(WebCore::GraphicsContext::setShadow):
* platform/graphics/GraphicsContext.h:
* platform/graphics/cg/GraphicsContextCG.cpp:
(WebCore::createCGColorWithColorSpace): New helper to create a 
color in a ColorSpace.
(WebCore::setCGFillColor): Call new helper.
(WebCore::setCGStrokeColor): Call new helper.
(WebCore::GraphicsContext::setPlatformShadow): Call new helper.
* platform/graphics/haiku/GraphicsContextHaiku.cpp:
(WebCore::GraphicsContext::setPlatformShadow):

Send appropriate ColorSpace to setShadow().
* platform/graphics/mac/FontMac.mm:
(WebCore::Font::drawGlyphs):
* rendering/EllipsisBox.cpp:
(WebCore::EllipsisBox::paint):
* rendering/InlineFlowBox.cpp:
(WebCore::InlineFlowBox::paintTextDecorations):
* rendering/InlineTextBox.cpp:
(WebCore::paintTextWithShadows):
(WebCore::InlineTextBox::paintDecoration):
* rendering/RenderBoxModelObject.cpp:
(WebCore::RenderBoxModelObject::paintBoxShadow):
* rendering/SVGInlineTextBox.cpp:
(WebCore::SVGInlineTextBox::paintCharacters):
* rendering/SVGRenderSupport.cpp:
(WebCore::SVGRenderBase::prepareToRenderSVGContent):

Attempt to keep ports building.
* platform/graphics/cairo/GraphicsContextCairo.cpp:
(WebCore::GraphicsContext::setPlatformShadow):
* platform/graphics/qt/GraphicsContextQt.cpp:
(WebCore::GraphicsContext::setPlatformShadow):
* platform/graphics/skia/GraphicsContextSkia.cpp:
(WebCore::GraphicsContext::setPlatformShadow):
* platform/graphics/wince/GraphicsContextWince.cpp:
(WebCore::GraphicsContext::setPlatformShadow):
* platform/graphics/wx/GraphicsContextWx.cpp:
(WebCore::GraphicsContext::setPlatformShadow):

LayoutTests: Tests for https://bugs.webkit.org/show_bug.cgi?id=31382
Make -webkit-color-correction work with shadows

Reviewed by Simon Fraser.

* fast/css/color-correction-on-box-shadow.html: Added.
* fast/css/color-correction-on-text-shadow.html: Added.
* platform/mac/fast/css/color-correction-on-box-shadow-expected.checksum: Added.
* platform/mac/fast/css/color-correction-on-box-shadow-expected.png: Added.
* platform/mac/fast/css/color-correction-on-box-shadow-expected.txt: Added.
* platform/mac/fast/css/color-correction-on-text-shadow-expected.checksum: Added.
* platform/mac/fast/css/color-correction-on-text-shadow-expected.png: Added.
* platform/mac/fast/css/color-correction-on-text-shadow-expected.txt: Added.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@50852 268f45cc-cd09-0410-ab3c-d52691b4dbfc