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

chrome/browser/extensions/extension_management_api.cc

Index: chrome/browser/extensions/extension_management_api.cc
diff --git a/chrome/browser/extensions/extension_management_api.cc b/chrome/browser/extensions/extension_management_api.cc
index df9fd2d5ef97237e6487c9ec20d0a0b6e30eea33..727101e83a5f13b498051d1e6f30c0c14093be32 100644
--- a/chrome/browser/extensions/extension_management_api.cc
+++ b/chrome/browser/extensions/extension_management_api.cc
@@ -569,9 +569,9 @@ void ExtensionManagementEventRouter::Observe(
       return;
   }
 
-  ListValue args;
+  ListValue* args = new ListValue();
   if (event_name == events::kOnExtensionUninstalled) {
-    args.Append(Value::CreateStringValue(
+    args->Append(Value::CreateStringValue(
         *content::Details<const std::string>(details).ptr()));
   } else {
     const Extension* extension = NULL;
@@ -583,12 +583,9 @@ void ExtensionManagementEventRouter::Observe(
     }
     CHECK(extension);
     ExtensionService* service = profile->GetExtensionService();
-    args.Append(CreateExtensionInfo(*extension, service));
+    args->Append(CreateExtensionInfo(*extension, service));
   }
 
-  std::string args_json;
-  base::JSONWriter::Write(&args, &args_json);
-
   profile->GetExtensionEventRouter()->DispatchEventToRenderers(
-      event_name, args_json, NULL, GURL(), extensions::EventFilteringInfo());
+      event_name, args, NULL, GURL(), extensions::EventFilteringInfo());
 }