[V8Tracing] Add lpy@ and fmeawad@ into watchlist for tracing/.

TBR=yangguo@chromium.org

Review-Url: https://codereview.chromium.org/2898043002
Cr-Commit-Position: refs/heads/master@{#45469}

WATCHLISTS

@@ -77,6 +77,9 @@
       'filepath': 'src/ast/' \
                   '|src/parsing/',
     },
+    'tracing': {
+      'filepath': 'src/tracing/',
+    },
   },
 
   'WATCHLISTS': {
@@ -120,6 +123,10 @@
     ],
     'parser': [
       'marja+watch@chromium.org',
-    ]
+    ],
+    'tracing': [
+      'lpy+v8tracing@chromium.org',
+      'fmeawad@chromium.org',
+    ],
   },
 }