style: Move SVGPathData and its parser into svg_path.rs.

SVGPathData will be used by clip-path and offset-path (and/or more on the
properties which support <basic-shape>). Therefore, let's move
SVGPathData out of motion.rs.

Differential Revision: https://phabricator.services.mozilla.com/D3631

components/style/gecko/conversions.rs

@@ -743,7 +743,7 @@ pub mod basic_shape {
     impl<'a> From<&'a StyleShapeSource> for OffsetPath {
         fn from(other: &'a StyleShapeSource) -> Self {
             use gecko_bindings::structs::StylePathCommand;
-            use values::specified::motion::{SVGPathData, PathCommand};
+            use values::specified::svg_path::{SVGPathData, PathCommand};
             match other.mType {
                 StyleShapeSourceType::Path => {
                     let gecko_path = unsafe { &*other.__bindgen_anon_1.mSVGPath.as_ref().mPtr };

components/style/values/specified/mod.rs

@@ -68,6 +68,7 @@ pub use self::position::{PositionComponent, ZIndex};
 pub use self::svg::{SVGLength, SVGOpacity, SVGPaint, SVGPaintKind};
 pub use self::svg::{SVGPaintOrder, SVGStrokeDashArray, SVGWidth};
 pub use self::svg::MozContextProperties;
+pub use self::svg_path::SVGPathData;
 pub use self::table::XSpan;
 pub use self::text::{InitialLetter, LetterSpacing, LineHeight, MozTabSize, TextAlign};
 pub use self::text::{TextEmphasisPosition, TextEmphasisStyle};
@@ -109,6 +110,7 @@ pub mod rect;
 pub mod resolution;
 pub mod source_size_list;
 pub mod svg;
+pub mod svg_path;
 pub mod table;
 pub mod text;
 pub mod time;