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

chrome/browser/extensions/extension_debugger_api.cc

Index: chrome/browser/extensions/extension_debugger_api.cc
diff --git a/chrome/browser/extensions/extension_debugger_api.cc b/chrome/browser/extensions/extension_debugger_api.cc
index 6e59f22468537a0c1e9de7be9bb4d855dd174f7b..d6d05afe006bd32d04b4a49f5784e8c042678487 100644
--- a/chrome/browser/extensions/extension_debugger_api.cc
+++ b/chrome/browser/extensions/extension_debugger_api.cc
@@ -248,14 +248,11 @@ void ExtensionDevToolsClientHost::SendDetachedEvent() {
   Profile* profile =
       Profile::FromBrowserContext(web_contents_->GetBrowserContext());
   if (profile != NULL && profile->GetExtensionEventRouter()) {
-    ListValue args;
-    args.Append(CreateDebuggeeId(tab_id_));
-
-    std::string json_args;
-    base::JSONWriter::Write(&args, &json_args);
+    ListValue* args = new ListValue();
+    args->Append(CreateDebuggeeId(tab_id_));
 
     profile->GetExtensionEventRouter()->DispatchEventToExtension(
-        extension_id_, keys::kOnDetach, json_args, profile, GURL());
+        extension_id_, keys::kOnDetach, args, profile, GURL());
   }
 }
 
@@ -298,18 +295,15 @@ void ExtensionDevToolsClientHost::DispatchOnInspectorFrontend(
     if (!dictionary->GetString("method", &method_name))
       return;
 
-    ListValue args;
-    args.Append(CreateDebuggeeId(tab_id_));
-    args.Append(Value::CreateStringValue(method_name));
+    ListValue* args = new ListValue();
+    args->Append(CreateDebuggeeId(tab_id_));
+    args->Append(Value::CreateStringValue(method_name));
     Value* params_value;
     if (dictionary->Get("params", &params_value))
-      args.Append(params_value->DeepCopy());
-
-    std::string json_args;
-    base::JSONWriter::Write(&args, &json_args);
+      args->Append(params_value->DeepCopy());
 
     profile->GetExtensionEventRouter()->DispatchEventToExtension(
-        extension_id_, keys::kOnEvent, json_args, profile, GURL());
+        extension_id_, keys::kOnEvent, args, profile, GURL());
   } else {
     SendCommandDebuggerFunction* function = pending_requests_[id];
     if (!function)