Get CanvasKit viewer compiling again

This probably isn't ideal, but it's a step to keep it compiling while we
get this utility up and running in a more permanent way.

Change-Id: I98f56fe28b98862000a134f697bb441d87e47f30
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/344176
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>

Author: csmartdalton86

modules/canvaskit/BUILD.gn

@@ -7,6 +7,36 @@ component("viewer_wasm") {
   testonly = true
   include_dirs = [ "../.." ]
   sources = [
+    "../../modules/svg/src/SkSVGAttribute.cpp",
+    "../../modules/svg/src/SkSVGAttributeParser.cpp",
+    "../../modules/svg/src/SkSVGCircle.cpp",
+    "../../modules/svg/src/SkSVGClipPath.cpp",
+    "../../modules/svg/src/SkSVGContainer.cpp",
+    "../../modules/svg/src/SkSVGDOM.cpp",
+    "../../modules/svg/src/SkSVGEllipse.cpp",
+    "../../modules/svg/src/SkSVGFe.cpp",
+    "../../modules/svg/src/SkSVGFeColorMatrix.cpp",
+    "../../modules/svg/src/SkSVGFeComposite.cpp",
+    "../../modules/svg/src/SkSVGFeTurbulence.cpp",
+    "../../modules/svg/src/SkSVGFilter.cpp",
+    "../../modules/svg/src/SkSVGFilterContext.cpp",
+    "../../modules/svg/src/SkSVGGradient.cpp",
+    "../../modules/svg/src/SkSVGLine.cpp",
+    "../../modules/svg/src/SkSVGLinearGradient.cpp",
+    "../../modules/svg/src/SkSVGNode.cpp",
+    "../../modules/svg/src/SkSVGPath.cpp",
+    "../../modules/svg/src/SkSVGPattern.cpp",
+    "../../modules/svg/src/SkSVGPoly.cpp",
+    "../../modules/svg/src/SkSVGRadialGradient.cpp",
+    "../../modules/svg/src/SkSVGRect.cpp",
+    "../../modules/svg/src/SkSVGRenderContext.cpp",
+    "../../modules/svg/src/SkSVGSVG.cpp",
+    "../../modules/svg/src/SkSVGShape.cpp",
+    "../../modules/svg/src/SkSVGStop.cpp",
+    "../../modules/svg/src/SkSVGText.cpp",
+    "../../modules/svg/src/SkSVGTransformableNode.cpp",
+    "../../modules/svg/src/SkSVGUse.cpp",
+    "../../modules/svg/src/SkSVGValue.cpp",
     "../../tools/viewer/SKPSlide.cpp",
     "../../tools/viewer/SampleSlide.cpp",
     "../../tools/viewer/SvgSlide.cpp",