[SVGDom] Add <line> support

BUILD.gn

Index: BUILD.gn
diff --git a/BUILD.gn b/BUILD.gn
index d7dd484fc3f0148d77be07894844c8061aa87487..ef989b9e3ca78be9ee21b5bbe4577eab11e4f924 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -522,6 +522,7 @@ test_lib("experimental_svg_model") {
     "experimental/svg/model/SkSVGAttributeParser.cpp",
     "experimental/svg/model/SkSVGContainer.cpp",
     "experimental/svg/model/SkSVGDOM.cpp",
+    "experimental/svg/model/SkSVGLine.cpp",

[robertphillips, 2016/08/16 22:47:17]

Do we not add headers to the .gn files ?

[mtklein, 2016/08/17 00:37:04]

It looks like Chrome does so inconsistently, which I imagine means you can add
them or leave them out completely without consequence, just like good old GYP.

There is another thing called public, meant for headers to be used as the public
interface to a module, here experimental_svg_model.  Steer clear of that.  It's
not clear to me that putting headers in public _does_ anything, beyond perhaps
feeding information into `gn check`.  It doesn't do anything neat like put the
directory containing the headers on the include path... you'd still need that
public_include_dirs bit.

This all looks a little academic as configured right now, as SK_XML is not
defined anywhere in here, s the GN build of DM doesn't build in SVG src support.

     "experimental/svg/model/SkSVGNode.cpp",
     "experimental/svg/model/SkSVGPath.cpp",
     "experimental/svg/model/SkSVGPoly.cpp",