Move avatar holder code to ash

ash/session_state_delegate.h

 // Copyright (c) 2013 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_SESSION_STATE_DELEGATE_H_
 #define ASH_SESSION_STATE_DELEGATE_H_
 
 #include <string>
 #include <vector>
 
 #include "ash/ash_export.h"
 #include "base/strings/string16.h"
 
 namespace aura {
 class Window;
 }  // namespace aura
 
+namespace content {
+class BrowserContext;
+}
+
 namespace gfx {
 class ImageSkia;
 }  // namespace gfx
 
 namespace ash {
 
 class SessionStateObserver;
 
 // The index for the multi-profile item to use. The list is always LRU sorted
 // So that the index #0 is the currently active user.
 typedef int MultiProfileIndex;
 
 // A list of user_id.
 typedef std::vector<std::string> UserIdList;
 
 // Delegate for checking and modifying the session state.
+// TODO(oshima): Replace MultiProfileIndex with BrowsreContext, bacause
+// GetUserXXX are useful for non multi profile scenario in ash_shell.
 class ASH_EXPORT SessionStateDelegate {
  public:
   // Defines the cycle direction for |CycleActiveUser|.
   enum CycleUser {
     CYCLE_TO_NEXT_USER = 0,  // Cycle to the next user.
     CYCLE_TO_PREVIOUS_USER,  // Cycle to the previous user.
   };
 
   virtual ~SessionStateDelegate() {};
 
+  // Returns the browser context for the user given by |index|.
+  virtual content::BrowserContext* GetBrowserContextByIndex(
+      MultiProfileIndex index) = 0;
+
   // Returns the maximum possible number of logged in users.
   virtual int GetMaximumNumberOfLoggedInUsers() const = 0;
 
   // Returns the number of signed in users. If 0 is returned, there is either
   // no session in progress or no active user.
   virtual int NumberOfLoggedInUsers() const = 0;
 
   // Returns |true| if the session has been fully started for the active user.
   // When a user becomes active, the profile and browser UI are not immediately
   // available. Only once this method starts returning |true| is the browser
@@ skipping 30 matching lines @@
   // The display email address might contains some periods in the email name
   // as well as capitalized letters. For example: "Foo.Bar@mock.com".
   // Note that |index| can at maximum be |NumberOfLoggedInUsers() - 1|.
   virtual const std::string GetUserEmail(MultiProfileIndex index) const = 0;
 
   // Gets the user id (sanitized email address) for the user with the given
   // |index|. The function would return something like "foobar@mock.com".
   // Note that |index| can at maximum be |NumberOfLoggedInUsers() - 1|.
   virtual const std::string GetUserID(MultiProfileIndex index) const = 0;
 
-  // Gets the avatar image for the user with the given |index|.
-  // Note that |index| can at maximum be |NumberOfLoggedInUsers() - 1|.
-  virtual const gfx::ImageSkia& GetUserImage(MultiProfileIndex index) const = 0;
+  // Gets the avatar image for the user associated with the |context|.
+  virtual const gfx::ImageSkia& GetUserImage(
+      content::BrowserContext* context) const = 0;
 
-  // Returns a list of all logged in users.
-  virtual void GetLoggedInUsers(UserIdList* users) = 0;
+  // Whether or not the window's title should show the avatar.
+  virtual bool ShouldShowAvatar(aura::Window* window) = 0;
 
   // Switches to another active user with |user_id|
   // (if that user has already signed in).
   virtual void SwitchActiveUser(const std::string& user_id) = 0;
 
   // Switches the active user to the next or previous user, with the same
   // ordering as GetLoggedInUsers.
   virtual void CycleActiveUser(CycleUser cycle_user) = 0;
 
   // Adds or removes sessions state observer.
   virtual void AddSessionStateObserver(SessionStateObserver* observer) = 0;
   virtual void RemoveSessionStateObserver(SessionStateObserver* observer) = 0;
 };
 
 }  // namespace ash
 
 #endif  // ASH_SESSION_STATE_DELEGATE_H_