[Easy signin] Wire up userClick auth attempt to easy unlock app and back

chrome/browser/extensions/api/easy_unlock_private/easy_unlock_private_api.h

 // Copyright 2014 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_EASY_UNLOCK_PRIVATE_EASY_UNLOCK_PRIVATE_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_EASY_UNLOCK_PRIVATE_EASY_UNLOCK_PRIVATE_API_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 281 matching lines @@
  private:
   virtual ~EasyUnlockPrivateGetSignInChallengeFunction();
 
   // SyncExtensionFunction:
   virtual bool RunSync() OVERRIDE;
 
   DISALLOW_COPY_AND_ASSIGN(EasyUnlockPrivateGetSignInChallengeFunction);
 };
 
 class EasyUnlockPrivateTrySignInSecretFunction :
-    public AsyncExtensionFunction {
+    public SyncExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("easyUnlockPrivate.trySignInSecret",
                              EASYUNLOCKPRIVATE_TRYSIGNINSECRET)
   EasyUnlockPrivateTrySignInSecretFunction();
 
  private:
   virtual ~EasyUnlockPrivateTrySignInSecretFunction();
 
-  // AsyncExtensionFunction:
-  virtual bool RunAsync() OVERRIDE;
+  // SyncExtensionFunction:
+  virtual bool RunSync() OVERRIDE;
 
   DISALLOW_COPY_AND_ASSIGN(EasyUnlockPrivateTrySignInSecretFunction);
 };
 
 class EasyUnlockPrivateGetUserInfoFunction : public SyncExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("easyUnlockPrivate.getUserInfo",
                              EASYUNLOCKPRIVATE_GETUSERINFO)
   EasyUnlockPrivateGetUserInfoFunction();
 
  private:
   virtual ~EasyUnlockPrivateGetUserInfoFunction();
 
   // SyncExtensionFunction:
   virtual bool RunSync() OVERRIDE;
 
   DISALLOW_COPY_AND_ASSIGN(EasyUnlockPrivateGetUserInfoFunction);
 };
 
 }  // namespace api
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_EASY_UNLOCK_PRIVATE_EASY_UNLOCK_PRIVATE_API_H_