Refactor extension event distribution to use Values instead of JSON strings.

chrome/renderer/resources/extensions/event.js

Index: chrome/renderer/resources/extensions/event.js
diff --git a/chrome/renderer/resources/extensions/event.js b/chrome/renderer/resources/extensions/event.js
index 4b0da04f17cb283ae6c57577ba356f32e3adfa57..f342014fdda09db0652e8d08c3778d0f9e3c99f9 100644
--- a/chrome/renderer/resources/extensions/event.js
+++ b/chrome/renderer/resources/extensions/event.js
@@ -210,7 +210,7 @@
   chromeHidden.Event = {};
 
   // callback is a function(args, dispatch). args are the args we receive from
-  // dispatchJSON(), and dispatch is a function(args) that dispatches args to
+  // dispatchEvent(), and dispatch is a function(args) that dispatches args to
   // its listeners.
   chromeHidden.Event.registerArgumentMassager = function(name, callback) {
     if (eventArgumentMassagers[name])
@@ -218,10 +218,9 @@
     eventArgumentMassagers[name] = callback;
   };
 
-  // Dispatches a named event with the given JSON array, which is deserialized
-  // before dispatch. The JSON array is the list of arguments that will be
-  // sent with the event callback.
-  chromeHidden.Event.dispatchJSON = function(name, args, filteringInfo) {
+  // Dispatches a named event with the given argument array. The args array is
+  // the list of arguments that will be sent to the event callback.
+  chromeHidden.Event.dispatchEvent = function(name, args, filteringInfo) {
     var listenerIDs = null;
 
     if (filteringInfo)
@@ -231,12 +230,6 @@
     if (!event)
       return;
 
-    // TODO(asargent): This is an antiquity. Until all callers of
-    // dispatchJSON use actual values, this must remain here to catch the
-    // cases where a caller has hard-coded a JSON string to pass in.
-    if (typeof(args) == "string")
-      args = chromeHidden.JSON.parse(args);
-
     var dispatchArgs = function(args) {
       result = event.dispatch_(args, listenerIDs);
       if (result)