Chrome OS multi-profiles backend and UI.

* Tray - launch login UI for multi-profiles
* UserManager: GetLoggedInUsers(), SwitchActiveUser(),
  add GetActiveUser() which will later replace GetLoggedInUser()
* Login UI: support "sign in to add" mode

Notifications:
* Pass chromeos::User* in details for
  - NOTIFICATION_LOGIN_USER_CHANGED
  - NOTIFICATION_ACTIVE_USER_CHANGED
  - NOTIFICATION_SESSION_STARTED
* Add NOTIFICATION_ACTIVE_USER_CHANGED (only when switching users for now)

Multi-profile hacks
* Initialize BrowserPolicyConnector only for primary user (http://crbug.com/230349)
* Redirect logging only once (http://crbug.com/230345)
* OAuth2LoginManager tracks only last logged in user (http://crbug.com/230342)

Depends on:
* Changes in ProfileManager https://codereview.chromium.org/14028010/
* Adding concept of "signin profile" https://codereview.chromium.org/13633003/

BUG=180903,217016
TEST=ProfileManager tests, manual (with all CLs applied and --multi-profiles)

Review URL: https://codereview.chromium.org/14139003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@194185 0039d316-1c4b-4281-b951-d872f2087c98

9 files changed, 46 insertions, 5 deletions

diff --git a/ash/shell/shell_delegate_impl.cc b/ash/shell/shell_delegate_impl.cc
index 330ab4d..bb29637 100644
--- a/ash/shell/shell_delegate_impl.cc
+++ b/ash/shell/shell_delegate_impl.cc
@@ -55,6 +55,10 @@ bool ShellDelegateImpl::IsFirstRunAfterBoot() const {
   return false;
 }
 
+bool ShellDelegateImpl::IsMultiProfilesEnabled() const {
+  return false;
+}
+
 bool ShellDelegateImpl::IsRunningInForcedAppMode() const {
   return false;
 }
diff --git a/ash/shell/shell_delegate_impl.h b/ash/shell/shell_delegate_impl.h
index b001038..b162d7a 100644
--- a/ash/shell/shell_delegate_impl.h
+++ b/ash/shell/shell_delegate_impl.h
@@ -31,6 +31,7 @@ class ShellDelegateImpl : public ash::ShellDelegate {
   virtual bool IsSessionStarted() const OVERRIDE;
   virtual bool IsGuestSession() const OVERRIDE;
   virtual bool IsFirstRunAfterBoot() const OVERRIDE;
+  virtual bool IsMultiProfilesEnabled() const OVERRIDE;
   virtual bool IsRunningInForcedAppMode() const OVERRIDE;
   virtual bool CanLockScreen() const OVERRIDE;
   virtual void LockScreen() OVERRIDE;
diff --git a/ash/shell_delegate.h b/ash/shell_delegate.h
index ce1c3a1..99aeb6e 100644
--- a/ash/shell_delegate.h
+++ b/ash/shell_delegate.h
@@ -112,6 +112,9 @@ class ASH_EXPORT ShellDelegate {
   // restarted, typically due to logging in as a guest or logging out.
   virtual bool IsFirstRunAfterBoot() const = 0;
 
+  // Returns true if multi-profiles feature is enabled.
+  virtual bool IsMultiProfilesEnabled() const = 0;
+
   // Returns true if we're running in forced app mode.
   virtual bool IsRunningInForcedAppMode() const = 0;
 
diff --git a/ash/system/tray/system_tray_delegate.h b/ash/system/tray/system_tray_delegate.h
index ba6a24f..7d079eb 100644
--- a/ash/system/tray/system_tray_delegate.h
+++ b/ash/system/tray/system_tray_delegate.h
@@ -110,6 +110,8 @@ typedef std::vector<IMEInfo> IMEInfoList;
 
 class VolumeControlDelegate;
 
+typedef std::vector<std::string> UserEmailList;
+
 class SystemTrayDelegate {
  public:
   virtual ~SystemTrayDelegate() {}
@@ -123,13 +125,19 @@ class SystemTrayDelegate {
   // Returns true if system tray should be visible on startup.
   virtual bool GetTrayVisibilityOnStartup() = 0;
 
-  // Gets information about the logged in user.
+  // Gets information about the active user.
   virtual const base::string16 GetUserDisplayName() const = 0;
   virtual const std::string GetUserEmail() const = 0;
   virtual const gfx::ImageSkia& GetUserImage() const = 0;
   virtual user::LoginStatus GetUserLoginStatus() const = 0;
   virtual bool IsOobeCompleted() const = 0;
 
+  // Returns a list of all logged in users.
+  virtual void GetLoggedInUsers(UserEmailList* users) = 0;
+
+  // Switches to another active user (if that user has already signed in).
+  virtual void SwitchActiveUser(const std::string& email) = 0;
+
   // Shows UI for changing user's profile picture.
   virtual void ChangeProfilePicture() = 0;
 
@@ -184,6 +192,9 @@ class SystemTrayDelegate {
   // Shows information about enterprise enrolled devices.
   virtual void ShowEnterpriseInfo() = 0;
 
+  // Shows login UI to add other users to this session.
+  virtual void ShowUserLogin() = 0;
+
   // Attempts to shut down the system.
   virtual void ShutDown() = 0;
 
diff --git a/ash/system/tray/test_system_tray_delegate.cc b/ash/system/tray/test_system_tray_delegate.cc
index 54dd036..30e63e4 100644
--- a/ash/system/tray/test_system_tray_delegate.cc
+++ b/ash/system/tray/test_system_tray_delegate.cc
@@ -103,6 +103,12 @@ bool TestSystemTrayDelegate::IsOobeCompleted() const {
   return true;
 }
 
+void TestSystemTrayDelegate::GetLoggedInUsers(UserEmailList* users) {
+}
+
+void TestSystemTrayDelegate::SwitchActiveUser(const std::string& email) {
+}
+
 void TestSystemTrayDelegate::ChangeProfilePicture() {
 }
 
@@ -162,6 +168,9 @@ void TestSystemTrayDelegate::ShowPublicAccountInfo() {
 void TestSystemTrayDelegate::ShowEnterpriseInfo() {
 }
 
+void TestSystemTrayDelegate::ShowUserLogin() {
+}
+
 void TestSystemTrayDelegate::ShutDown() {
   MessageLoop::current()->Quit();
 }
diff --git a/ash/system/tray/test_system_tray_delegate.h b/ash/system/tray/test_system_tray_delegate.h
index 80f9fce..a08b6ef 100644
--- a/ash/system/tray/test_system_tray_delegate.h
+++ b/ash/system/tray/test_system_tray_delegate.h
@@ -31,6 +31,8 @@ class TestSystemTrayDelegate : public SystemTrayDelegate {
   virtual const gfx::ImageSkia& GetUserImage() const OVERRIDE;
   virtual user::LoginStatus GetUserLoginStatus() const OVERRIDE;
   virtual bool IsOobeCompleted() const OVERRIDE;
+  virtual void GetLoggedInUsers(UserEmailList* users) OVERRIDE;
+  virtual void SwitchActiveUser(const std::string& email) OVERRIDE;
   virtual void ChangeProfilePicture() OVERRIDE;
   virtual const std::string GetEnterpriseDomain() const OVERRIDE;
   virtual const base::string16 GetEnterpriseMessage() const OVERRIDE;
@@ -49,6 +51,7 @@ class TestSystemTrayDelegate : public SystemTrayDelegate {
   virtual void ShowAccessibilityHelp() OVERRIDE;
   virtual void ShowPublicAccountInfo() OVERRIDE;
   virtual void ShowEnterpriseInfo() OVERRIDE;
+  virtual void ShowUserLogin() OVERRIDE;
   virtual void ShutDown() OVERRIDE;
   virtual void SignOut() OVERRIDE;
   virtual void RequestLockScreen() OVERRIDE;
diff --git a/ash/system/user/tray_user.cc b/ash/system/user/tray_user.cc
index 23f81a6..60b0d8d 100644
--- a/ash/system/user/tray_user.cc
+++ b/ash/system/user/tray_user.cc
@@ -9,6 +9,7 @@
 #include <vector>
 
 #include "ash/shell.h"
+#include "ash/shell_delegate.h"
 #include "ash/system/tray/system_tray.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "ash/system/tray/system_tray_notifier.h"
@@ -470,12 +471,16 @@ void UserView::Layout() {
 }
 
 void UserView::ButtonPressed(views::Button* sender, const ui::Event& event) {
-  if (sender == logout_button_)
+  if (sender == logout_button_) {
     ash::Shell::GetInstance()->system_tray_delegate()->SignOut();
-  else if (sender == profile_picture_)
-    ash::Shell::GetInstance()->system_tray_delegate()->ChangeProfilePicture();
-  else
+  } else if (sender == profile_picture_) {
+    if (ash::Shell::GetInstance()->delegate()->IsMultiProfilesEnabled())
+      ash::Shell::GetInstance()->system_tray_delegate()->ShowUserLogin();
+    else
+      ash::Shell::GetInstance()->system_tray_delegate()->ChangeProfilePicture();
+  } else {
     NOTREACHED();
+  }
 }
 
 void UserView::AddLogoutButton(ash::user::LoginStatus login) {
diff --git a/ash/test/test_shell_delegate.cc b/ash/test/test_shell_delegate.cc
index 6ec196d..ea971d7 100644
--- a/ash/test/test_shell_delegate.cc
+++ b/ash/test/test_shell_delegate.cc
@@ -49,6 +49,10 @@ bool TestShellDelegate::IsFirstRunAfterBoot() const {
   return false;
 }
 
+bool TestShellDelegate::IsMultiProfilesEnabled() const {
+  return false;
+}
+
 bool TestShellDelegate::IsRunningInForcedAppMode() const {
   return false;
 }
diff --git a/ash/test/test_shell_delegate.h b/ash/test/test_shell_delegate.h
index 269d571..1ff9ce9 100644
--- a/ash/test/test_shell_delegate.h
+++ b/ash/test/test_shell_delegate.h
@@ -30,6 +30,7 @@ class TestShellDelegate : public ShellDelegate {
   virtual bool IsSessionStarted() const OVERRIDE;
   virtual bool IsGuestSession() const OVERRIDE;
   virtual bool IsFirstRunAfterBoot() const OVERRIDE;
+  virtual bool IsMultiProfilesEnabled() const OVERRIDE;
   virtual bool IsRunningInForcedAppMode() const OVERRIDE;
   virtual bool CanLockScreen() const OVERRIDE;
   virtual void LockScreen() OVERRIDE;