DevTools: support sourceMappingURL for the inline stylesheets

third_party/WebKit/LayoutTests/inspector/elements/styles-4/inline-style-sourcemap-expected.txt

Index: third_party/WebKit/LayoutTests/inspector/elements/styles-4/inline-style-sourcemap-expected.txt
diff --git a/third_party/WebKit/LayoutTests/inspector/elements/styles-4/inline-style-sourcemap-expected.txt b/third_party/WebKit/LayoutTests/inspector/elements/styles-4/inline-style-sourcemap-expected.txt
index 8c8bd022a7f724b59b94e0ba1407b5aa62c5cecf..b92608cddd8549ad83097aa69f55c780cbd45220 100644
--- a/third_party/WebKit/LayoutTests/inspector/elements/styles-4/inline-style-sourcemap-expected.txt
+++ b/third_party/WebKit/LayoutTests/inspector/elements/styles-4/inline-style-sourcemap-expected.txt
@@ -2,6 +2,24 @@ Verify that inline style sourceMappingURL is resolved properly.
 
 .red,body{color:red}body{background-color:red}
 /*# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbIm1peGluLmxlc3MiLCJ0ZXN0Lmxlc3MiXSwibmFtZXMiOltdLCJtYXBwaW5ncyI6IkFBQUEsS0NJQSxLREhFLE1BQUEsSUNHRixLQUVFLGlCQUFBIn0=*/
+[expanded] 
+element.style { ()
+
+[expanded] 
+body { (test.less:5 -> test.less:5:1)
+    background-color: red;
+
+[expanded] 
+.red, body { (test.less:5 -> test.less:5:1)
+    color: red;
+
+[expanded] 
+body { (user agent stylesheet)
+    display: block;
+    margin: 8px;
+        margin-top: 8px;
+        margin-right: 8px;
+        margin-bottom: 8px;
+        margin-left: 8px;
 
-header.sourceMapURL = data:application/json;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbIm1peGluLmxlc3MiLCJ0ZXN0Lmxlc3MiXSwibmFtZXMiOltdLCJtYXBwaW5ncyI6IkFBQUEsS0NJQSxLREhFLE1BQUEsSUNHRixLQUVFLGlCQUFBIn0=