Convert raw strings in pub (and apidoc) to new syntax.

utils/apidoc/mdn/extract.dart

 #import ("dart:html");
 #import ("dart:json");
 
 // Workaround for HTML lib missing feature.
 Range newRange() {
   return document.createRange();
 }
 
 // Temporary range object to optimize performance computing client rects
 // from text nodes.
@@ skipping 661 matching lines @@
     }
   }
   return cand;
 }
 
 /**
  * Checks whether [e] is tagged as obsolete or deprecated using heuristics
  * for what these tags look like in the MDN docs.
  */
 bool isObsolete(Element e) {
-  RegExp obsoleteRegExp = new RegExp(@"(^|\s)obsolete(?=\s|$)");
-  RegExp deprecatedRegExp = new RegExp(@"(^|\s)deprecated(?=\s|$)");
+  RegExp obsoleteRegExp = new RegExp(r"(^|\s)obsolete(?=\s|$)");
+  RegExp deprecatedRegExp = new RegExp(r"(^|\s)deprecated(?=\s|$)");
   for (Element child in e.queryAll("span")) {
     String t = child.text.toLowerCase();
     if (t.startsWith("obsolete") || t.startsWith("deprecated")) return true;
   }
 
   String text = e.text.toLowerCase();
   return obsoleteRegExp.hasMatch(text) || deprecatedRegExp.hasMatch(text);
 }
 
 bool isFirstCharLowerCase(String str) {
@@ skipping 420 matching lines @@
   }
 
   // Flatten the list of known DOM types into a faster and case-insensitive
   // map.
   domTypes = {};
   for (final domType in domTypesRaw) {
     domTypes[domType.toLowerCase()] = domType;
   }
 
   // Fix up links.
-  const SHORT_LINK = const RegExp(@'^[\w/]+$');
-  const INNER_LINK = const RegExp(@'[Ee]n/(?:[\w/]+/|)([\w#.]+)(?:\(\))?$');
-  const MEMBER_LINK = const RegExp(@'(\w+)[.#](\w+)');
-  const RELATIVE_LINK = const RegExp(@'^(?:../)*/?[Ee][Nn]/(.+)');
+  const SHORT_LINK = const RegExp(r'^[\w/]+$');
+  const INNER_LINK = const RegExp(r'[Ee]n/(?:[\w/]+/|)([\w#.]+)(?:\(\))?$');
+  const MEMBER_LINK = const RegExp(r'(\w+)[.#](\w+)');
+  const RELATIVE_LINK = const RegExp(r'^(?:../)*/?[Ee][Nn]/(.+)');
 
   // - Make relative links absolute.
   // - If we can, take links that point to other MDN pages and retarget them
   //   to appropriate pages in our docs.
   // TODO(rnystrom): Add rel external to links we didn't fix.
   for (AnchorElement a in document.queryAll('a')) {
     // Get the raw attribute because we *don't* want the browser to fully-
     // qualify the name for us since it has the wrong base address for the
     // page.
     var href = a.attributes['href'];
@@ skipping 167 matching lines @@
 }
 
 void documentLoaded(event) {
   // Load the database of expected methods and properties with an HttpRequest.
   new HttpRequest.get('${window.location}.json', (req) {
     data = JSON.parse(req.responseText);
     dbEntry = {'members': [], 'srcUrl': pageUrl};
     run();
   });
 }