DevTools: [SASS] introduce sass module, implement SCSS AST-builder.

third_party/WebKit/LayoutTests/inspector/sass/test-ast-scss-4-expected.txt

Index: third_party/WebKit/LayoutTests/inspector/sass/test-ast-scss-4-expected.txt
diff --git a/third_party/WebKit/LayoutTests/inspector/sass/test-ast-scss-4-expected.txt b/third_party/WebKit/LayoutTests/inspector/sass/test-ast-scss-4-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..17051b541bce5803d4d5dd29554464cd4a84cf2b
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/inspector/sass/test-ast-scss-4-expected.txt
@@ -0,0 +1,46 @@
+Verifies AST of SCSS with media query.
+
+@media (min-device-width: 720px) {
+    body {
+        width: 720px;
+        /* padding-top: 5em; */
+        height: 100%;
+        margin: 0 auto;
+    }
+}
+
+=== AST === 
+rule 0: "variables"
+rule 1: "properties"
+    property 0
+        name: "width"
+            range: {"startLine":2,"startColumn":8,"endLine":2,"endColumn":13}
+        value: " 720px"
+            range: {"startLine":2,"startColumn":14,"endLine":2,"endColumn":20}
+        range: {"startLine":2,"startColumn":8,"endLine":2,"endColumn":21}
+        disabled: false
+    property 1
+        name: "padding-top"
+            range: {"startLine":3,"startColumn":11,"endLine":3,"endColumn":22}
+        value: " 5em"
+            range: {"startLine":3,"startColumn":23,"endLine":3,"endColumn":27}
+        range: {"startLine":3,"startColumn":8,"endLine":3,"endColumn":31}
+        disabled: true
+    property 2
+        name: "height"
+            range: {"startLine":4,"startColumn":8,"endLine":4,"endColumn":14}
+        value: " 100%"
+            range: {"startLine":4,"startColumn":15,"endLine":4,"endColumn":20}
+        range: {"startLine":4,"startColumn":8,"endLine":4,"endColumn":21}
+        disabled: false
+    property 3
+        name: "margin"
+            range: {"startLine":5,"startColumn":8,"endLine":5,"endColumn":14}
+        value: " 0 auto"
+            range: {"startLine":5,"startColumn":15,"endLine":5,"endColumn":22}
+        range: {"startLine":5,"startColumn":8,"endLine":5,"endColumn":23}
+        disabled: false
+rule 2: "mixins"
+======
+Ranges OK.
+