Getting rid of GetDefaultProfile & fixing multi user issues with accessibility

chrome/browser/chromeos/accessibility/accessibility_manager.h

Index: chrome/browser/chromeos/accessibility/accessibility_manager.h
diff --git a/chrome/browser/chromeos/accessibility/accessibility_manager.h b/chrome/browser/chromeos/accessibility/accessibility_manager.h
index e6dadbecb9304f49d24480a77538db100d66bea6..a4deb24d8a6df1b372d9495a7d379ea36c768bb8 100644
--- a/chrome/browser/chromeos/accessibility/accessibility_manager.h
+++ b/chrome/browser/chromeos/accessibility/accessibility_manager.h
@@ -6,6 +6,7 @@
 #define CHROME_BROWSER_CHROMEOS_ACCESSIBILITY_ACCESSIBILITY_MANAGER_H_
 
 #include "ash/accessibility_delegate.h"
+#include "ash/session_state_observer.h"
 #include "base/memory/weak_ptr.h"
 #include "base/prefs/pref_change_registrar.h"
 #include "base/time/time.h"
@@ -40,7 +41,8 @@ struct AccessibilityStatusEventDetails {
 // TODO(yoshiki): merge MagnificationManager with AccessibilityManager.
 class AccessibilityManager : public content::NotificationObserver,
     public extensions::EventRouter::Observer,
-    extensions::api::braille_display_private::BrailleObserver {
+    extensions::api::braille_display_private::BrailleObserver,
+    public ash::SessionStateObserver {
  public:
   // Creates an instance of AccessibilityManager, this should be called once,
   // because only one instance should exist at the same time.
@@ -67,6 +69,9 @@ class AccessibilityManager : public content::NotificationObserver,
     const char* pref_path_;
   };
 
+  // Returns true when the accessibility menu should be shown.
+  bool ShouldShowAccessibilityMenu();
+
   // Enables or disables the large cursor.
   void EnableLargeCursor(bool enabled);
   // Returns true if the large cursor is enabled, or false if not.
@@ -110,6 +115,9 @@ class AccessibilityManager : public content::NotificationObserver,
   // Returns the autoclick delay in milliseconds.
   int GetAutoclickDelay() const;
 
+  // SessionStateObserver overrides:
+  virtual void ActiveUserChanged(const std::string& user_id) OVERRIDE;
+
   void SetProfileForTest(Profile* profile);
 
   static void SetBrailleControllerForTest(
@@ -205,6 +213,9 @@ class AccessibilityManager : public content::NotificationObserver,
 
   bool should_speak_chrome_vox_announcements_on_user_screen_;
 
+  // True if the session state observer was installed.
+  bool session_state_observer_installed_;
+
   bool system_sounds_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(AccessibilityManager);