Bug 1277806 - Add support for the keyed scalars to the scalar registry. r=gfritzsche

MozReview-Commit-ID: 8dKj92Kh2Ev

toolkit/components/telemetry/parse_scalars.py

@@ -86,7 +86,8 @@ class ScalarType:
 
         OPTIONAL_FIELDS = {
             'cpp_guard': basestring,
-            'release_channel_collection': basestring
+            'release_channel_collection': basestring,
+            'keyed': bool
         }
 
         # The types for the data within the fields that hold lists.
@@ -192,6 +193,11 @@ class ScalarType:
         """Get the scalar kind"""
         return self._definition['kind']
 
+    @property
+    def keyed(self):
+        """Boolean indicating whether this is a keyed scalar"""
+        return self._definition.get('keyed', False)
+
     @property
     def nsITelemetry_kind(self):
         """Get the scalar kind constant defined in nsITelemetry"""