Merge pull request +6495 from c9/raygun

investigating cause of increased number of raygun errors

plugins/c9.ide.errorhandler/raygun.js

@@ -1417,6 +1417,10 @@ window.TraceKit = TraceKit;
     }
   }
     
+  var blackListedErrors = {
+    'Error with empty message': {},
+    'Script error': {}
+  };
   function processUnhandledException(stackTrace, options) {
     var stack = [],
         qs = {};
@@ -1470,13 +1474,24 @@ window.TraceKit = TraceKit;
       log('Raygun4JS: ' + msg);
     }
     
+    // c9!
+    var message = custom_message || stackTrace.message || options.status || 'Error with empty message';
+    if (blackListedErrors.hasOwnProperty(message)) {
+        var count = (blackListedErrors[message].count || 0) + 1;
+        blackListedErrors[message].count = count;
+        if (count % 10 !== 1) {
+            return;
+        }
+        finalCustomData.$blackList = blackListedErrors[message];
+    }
+
     var payload = {
       'OccurredOn': new Date(),
       'Details': {
         'Error': {
           'ClassName': stackTrace.name,
-          'Message': custom_message || stackTrace.message || options.status || 'Script error',
+          'Message': message,
-          'StackTrace': stack
+          'StackTrace': stack,
         },
         'Environment': {
           'UtcOffset': new Date().getTimezoneOffset() / -60.0,