Added support for multiple parameters to Extension API callbacks.

chrome/browser/speech/extension_api/tts_extension_api.cc

Index: chrome/browser/speech/extension_api/tts_extension_api.cc
diff --git a/chrome/browser/speech/extension_api/tts_extension_api.cc b/chrome/browser/speech/extension_api/tts_extension_api.cc
index 1824a15b8b3893b5b20788a1bda5370f0b729eb7..8645aefa690ff8bd2deca5fde2387970d3849ff7 100644
--- a/chrome/browser/speech/extension_api/tts_extension_api.cc
+++ b/chrome/browser/speech/extension_api/tts_extension_api.cc
@@ -163,12 +163,12 @@ bool ExtensionTtsStopSpeakingFunction::RunImpl() {
 }
 
 bool ExtensionTtsIsSpeakingFunction::RunImpl() {
-  result_.reset(Value::CreateBooleanValue(
+  SetResult(Value::CreateBooleanValue(
       ExtensionTtsController::GetInstance()->IsSpeaking()));
   return true;
 }
 
 bool ExtensionTtsGetVoicesFunction::RunImpl() {
-  result_.reset(ExtensionTtsController::GetInstance()->GetVoices(profile()));
+  SetResult(ExtensionTtsController::GetInstance()->GetVoices(profile()));
   return true;
 }