Implemented system tray UI for new account management.

ash/shell_delegate.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 ASH_SHELL_DELEGATE_H_
 #define ASH_SHELL_DELEGATE_H_
 
 #include <string>
 
 #include "ash/ash_export.h"
@@ skipping 54 matching lines @@
   // Returns true if multi-profiles feature is enabled.
   virtual bool IsMultiProfilesEnabled() const = 0;
 
   // Returns true if incognito mode is allowed for the user.
   // Incognito windows are restricted for supervised users.
   virtual bool IsIncognitoAllowed() const = 0;
 
   // Returns true if we're running in forced app mode.
   virtual bool IsRunningInForcedAppMode() const = 0;
 
+  // Returns true if new account management is enabled.

[oshima, 2014/03/31 23:07:52]

Can you describe what "new" account management is?

I believe this is for multi-login, correct?

If so, it'd be better to be consistent with the method for multi-profile .

If this feature and multi-profile will never be enabled at the same
time, please consider having a enum like AccountMode { SINGLE, MULTI_PROFILE,
MULTI_LOGIN }.
This is better than having multiple boolean predicates where you have to pay
attention to impossible
state (both are true).

[oshima, 2014/04/01 00:30:43]

nvm this part. I just chatted with mlchan and she confirmed that both can be
enabled at the same time.

[oshima, 2014/04/02 00:14:14]

Sorry if it wasn't clear but this question is still valid. I still
think "AccountManagement" is too generic.

I just chatted with Min at el, and we agreed that MultiAccount is a better name
in the code.

[dzhioev (left Google), 2014/04/09 16:31:38]

Done. Renamed to MultiAccount.

+  virtual bool IsAccountManagementEnabled() const = 0;
+
   // Called before processing |Shell::Init()| so that the delegate
   // can perform tasks necessary before the shell is initialized.
   virtual void PreInit() = 0;
 
   // Shuts down the environment.
   virtual void Shutdown() = 0;
 
   // Invoked when the user uses Ctrl-Shift-Q to close chrome.
   virtual void Exit() = 0;
 
@@ skipping 46 matching lines @@
   // Creates a GPU support object. Shell takes ownership of the object.
   virtual GPUSupport* CreateGPUSupport() = 0;
 
   // Get the product name.
   virtual base::string16 GetProductName() const = 0;
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_DELEGATE_H_