DevTools: Turn *Model events into symbols

third_party/WebKit/Source/devtools/front_end/sdk/ConsoleModel.js

Index: third_party/WebKit/Source/devtools/front_end/sdk/ConsoleModel.js
diff --git a/third_party/WebKit/Source/devtools/front_end/sdk/ConsoleModel.js b/third_party/WebKit/Source/devtools/front_end/sdk/ConsoleModel.js
index d23a8fec22206f7612fc6297fe6693b3f4c6d2fe..a77974c551e79737e4dc2ece37723649b288618a 100644
--- a/third_party/WebKit/Source/devtools/front_end/sdk/ConsoleModel.js
+++ b/third_party/WebKit/Source/devtools/front_end/sdk/ConsoleModel.js
@@ -49,12 +49,12 @@ WebInspector.ConsoleModel = function(target)
     this._logAgent.enable();
 }
 
-/** @enum {string} */
+/** @enum {symbol} */
 WebInspector.ConsoleModel.Events = {
-    ConsoleCleared: "ConsoleCleared",
-    MessageAdded: "MessageAdded",
-    MessageUpdated: "MessageUpdated",
-    CommandEvaluated: "CommandEvaluated"
+    ConsoleCleared: Symbol("ConsoleCleared"),
+    MessageAdded: Symbol("MessageAdded"),
+    MessageUpdated: Symbol("MessageUpdated"),
+    CommandEvaluated: Symbol("CommandEvaluated")
 }
 
 WebInspector.ConsoleModel.prototype = {