Added support for multiple parameters to Extension API callbacks.

chrome/browser/extensions/api/identity/identity_api.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/api/identity/identity_api.h"
 
 #include "base/values.h"
 #include "chrome/browser/extensions/extension_install_prompt.h"
 #include "chrome/browser/extensions/extension_function_dispatcher.h"
 #include "chrome/browser/extensions/extension_service.h"
@@ skipping 34 matching lines @@
                     OAuth2MintTokenFlow::MODE_MINT_TOKEN_FORCE :
                     OAuth2MintTokenFlow::MODE_MINT_TOKEN_NO_FORCE)) {
     return true;
   } else {
     Release();
     return false;
   }
 }
 
 void GetAuthTokenFunction::OnMintTokenSuccess(const std::string& access_token) {
-  result_.reset(Value::CreateStringValue(access_token));
+  SetResult(Value::CreateStringValue(access_token));
   SendResponse(true);
   Release();  // Balanced in RunImpl.
 }
 
 void GetAuthTokenFunction::OnMintTokenFailure(
     const GoogleServiceAuthError& error) {
   error_ = std::string(kAuthFailure) + error.ToString();
   SendResponse(false);
   Release();  // Balanced in RunImpl.
 }
@@ skipping 74 matching lines @@
   AddRef();  // Balanced in OnAuthFlowSuccess/Failure.
   GURL auth_url(url);
   auth_flow_.reset(new WebAuthFlow(
       this, profile(), GetExtension()->id(), auth_url, mode));
   auth_flow_->Start();
   return true;
 }
 
 void LaunchWebAuthFlowFunction::OnAuthFlowSuccess(
     const std::string& redirect_url) {
-  result_.reset(Value::CreateStringValue(redirect_url));
+  SetResult(Value::CreateStringValue(redirect_url));
   SendResponse(true);
   Release();  // Balanced in RunImpl.
 }
 
 void LaunchWebAuthFlowFunction::OnAuthFlowFailure() {
   error_ = kInvalidRedirect;
   SendResponse(false);
   Release();  // Balanced in RunImpl.
 }
 
 }  // namespace extensions