DevTools: [SASS] parse SCSS rules and their selectors.

third_party/WebKit/LayoutTests/inspector/sass/test-ast-scss-3-expected.txt

 Verifies AST of SCSS with mixins.
 
 @mixin awesome {
     width: 100%;
     height: 100%;
 }
 
 @mixin border-radius($radius) {
   -webkit-border-radius: $radius;
      -moz-border-radius: $radius;
       -ms-border-radius: $radius;
           border-radius: $radius;
 }
 
 div {
     @include border-radius(15px);
     @include awesome;
 }
 
 === AST === 
-rule 0: "variables"
-rule 1: "properties"
+rule 0: ""
     property 0
         name: "width"
             range: {"startLine":1,"startColumn":4,"endLine":1,"endColumn":9}
         value: " 100%"
             range: {"startLine":1,"startColumn":10,"endLine":1,"endColumn":15}
         range: {"startLine":1,"startColumn":4,"endLine":1,"endColumn":16}
         disabled: false
     property 1
         name: "height"
             range: {"startLine":2,"startColumn":4,"endLine":2,"endColumn":10}
         value: " 100%"
             range: {"startLine":2,"startColumn":11,"endLine":2,"endColumn":16}
         range: {"startLine":2,"startColumn":4,"endLine":2,"endColumn":17}
         disabled: false
-    property 2
+rule 1: ""
+    property 0
         name: "-webkit-border-radius"
             range: {"startLine":6,"startColumn":2,"endLine":6,"endColumn":23}
         value: " $radius"
             range: {"startLine":6,"startColumn":24,"endLine":6,"endColumn":32}
         range: {"startLine":6,"startColumn":2,"endLine":6,"endColumn":33}
         disabled: false
-    property 3
+    property 1
         name: "-moz-border-radius"
             range: {"startLine":7,"startColumn":5,"endLine":7,"endColumn":23}
         value: " $radius"
             range: {"startLine":7,"startColumn":24,"endLine":7,"endColumn":32}
         range: {"startLine":7,"startColumn":5,"endLine":7,"endColumn":33}
         disabled: false
-    property 4
+    property 2
         name: "-ms-border-radius"
             range: {"startLine":8,"startColumn":6,"endLine":8,"endColumn":23}
         value: " $radius"
             range: {"startLine":8,"startColumn":24,"endLine":8,"endColumn":32}
         range: {"startLine":8,"startColumn":6,"endLine":8,"endColumn":33}
         disabled: false
-    property 5
+    property 3
         name: "border-radius"
             range: {"startLine":9,"startColumn":10,"endLine":9,"endColumn":23}
         value: " $radius"
             range: {"startLine":9,"startColumn":24,"endLine":9,"endColumn":32}
         range: {"startLine":9,"startColumn":10,"endLine":9,"endColumn":33}
         disabled: false
-rule 2: "mixins"
+rule 2: "div"
     property 0
         name: "border-radius"
             range: {"startLine":13,"startColumn":13,"endLine":13,"endColumn":26}
         value: "15px"
             range: {"startLine":13,"startColumn":27,"endLine":13,"endColumn":31}
         range: {"startLine":13,"startColumn":4,"endLine":13,"endColumn":32}
         disabled: false
 ======
 Ranges OK.