Use new try-catch syntax in runtime/, tools/, and utils/.

utils/apidoc/mdn/extract.dart

 #import ("dart:html");
 #import ("dart:dom_deprecated", prefix:"dom");
 #import ("dart:json");
 
 // Workaround for HTML lib missing feature.
 Range newRange() {
   return LevelDom.wrapRange(dom.document.createRange());
 }
 
 // Temporary range object to optimize performance computing client rects
@@ skipping 13 matching lines @@
     _tempRange.setEndAfter(n);
      return _tempRange.getBoundingClientRect();
   }
 }
 
 /**
  * CSS class that is added to elements in the DOM to indicate that they should
  * be removed when extracting blocks of documentation.  This is helpful when
  * running this script in a web browser as it is easy to visually see what
  * blocks of information were extracted when using CSS such as DEBUG_CSS
- * which highlights elements that should be removed. 
+ * which highlights elements that should be removed.
  */
 final DART_REMOVED = "dart-removed";
 
 final DEBUG_CSS = """
 <style type="text/css">
   .dart-removed {
     background-color: rgba(255, 0, 0, 0.5);
    }
 </style>""";
 
@@ skipping 1142 matching lines @@
     // current class name.
     for (String tag in [title.split(" ")[0], title.split(".").last()]) {
       try {
         dom.Element element = dom.document.createElement(tag);
         // TODO(jacobr): this is a really ugly way of doing this that will
         // stop working at some point soon.
         if (element.typeName == currentType) {
           foundMatch = true;
           break;
         }
-      } catch(e) {}
+      } catch (e) {}
     }
     if (!foundMatch) {
       dbEntry['skipped'] = true;
       dbEntry['cause'] = "Suspect title";
       onEnd();
       return;
     }
   }
 
   Element root = document.query(".pageText");
@@ skipping 100 matching lines @@
 
 void documentLoaded(event) {
   // Load the database of expected methods and properties with an
   // XMLHttpRequest.
   new XMLHttpRequest.get('${window.location}.json', (req) {
     data = JSON.parse(req.responseText);
     dbEntry = {'members': [], 'srcUrl': pageUrl};
     run();
   });
 }