Start implementing an auth flow for platform apps to be able to do auth

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

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_IDENTITY_IDENTITY_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_IDENTITY_IDENTITY_API_H_
 #pragma once
 
 #include <string>
 
 #include "base/memory/weak_ptr.h"
+#include "chrome/browser/extensions/api/identity/extension_auth_flow.h"
 #include "chrome/browser/extensions/app_notify_channel_setup.h"
 #include "chrome/browser/extensions/extension_function.h"
 #include "chrome/common/net/gaia/oauth2_mint_token_flow.h"
 
 class GoogleServiceAuthError;
 
+namespace content {
+class WebContents;
+}
+
 namespace extensions {
 
 class GetAuthTokenFunction : public AsyncExtensionFunction,
                              public OAuth2MintTokenFlow::Delegate {
  public:
   GetAuthTokenFunction();
 
  private:
   virtual ~GetAuthTokenFunction();
   virtual bool RunImpl() OVERRIDE;
 
   // OAuth2MintTokenFlow::Delegate implementation:
   virtual void OnMintTokenSuccess(const std::string& access_token) OVERRIDE;
   virtual void OnMintTokenFailure(const GoogleServiceAuthError& error) OVERRIDE;
 
   scoped_ptr<OAuth2MintTokenFlow> flow_;
 
   DECLARE_EXTENSION_FUNCTION_NAME("experimental.identity.getAuthToken");
 };
 
+class LaunchAuthFlowFunction : public AsyncExtensionFunction,
+                               public ExtensionAuthFlow::Delegate {
+ public:
+  LaunchAuthFlowFunction();
+
+ private:
+  virtual ~LaunchAuthFlowFunction();
+  virtual bool RunImpl() OVERRIDE;
+
+  // ExtensionAuthFlow::Delegate implementation.
+  virtual void OnAuthFlowCompleted(const std::string& redirect_url) OVERRIDE;
+
+  scoped_ptr<ExtensionAuthFlow> auth_flow_;
+
+  DECLARE_EXTENSION_FUNCTION_NAME("experimental.identity.launchAuthFlow");
+};
+
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_IDENTITY_IDENTITY_API_H_