Bug 1348430 - Part 1. (Main) Correct value pass to nsFilterInstance::PaintFilteredFrame in nsSVGUtil. r=mstange

There are two places that use nsFilterInstance::PaintFilteredFrame. One is
nsSVGIntegrationUtil::PaintFilter, we do take care of it in bug 1224207.
Another path is at nsSVGUtils::PaintFrameWithEffects, apparently I missed that
path while working on bug 1224207.

MozReview-Commit-ID: K4MjKa4ZpCR

--HG--
extra : rebase_source : 46696b620b210348052fe554b15abf0c3adedc72

layout/svg/nsSVGUtils.cpp

@@ -482,7 +482,9 @@ public:
       }
     }
 
-    return svgFrame->PaintSVG(aContext, aTransform, dirtyRect);
+    return svgFrame->PaintSVG(aContext,
+                              nsSVGUtils::GetCSSPxToDevPxMatrix(aTarget),
+                              dirtyRect);
   }
 };
 
@@ -858,6 +860,13 @@ nsSVGUtils::PaintFrameWithEffects(nsIFrame *aFrame,
         aFrame->GetPosition();
       dirtyRegion = &tmpDirtyRegion;
     }
+
+    gfxContextMatrixAutoSaveRestore saver(target);
+    gfxMatrix devPxToCssPxTM = nsSVGUtils::GetCSSPxToDevPxMatrix(aFrame);
+    DebugOnly<bool> invertible = devPxToCssPxTM.Invert();
+    MOZ_ASSERT(invertible);
+    target->SetMatrix(aTransform * devPxToCssPxTM);
+
     SVGPaintCallback paintCallback;
     result =
       nsFilterInstance::PaintFilteredFrame(aFrame, target->GetDrawTarget(),