Show ChromeVox caption panel when spoken feedback is enabled.

ash/shell.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_H_
 #define ASH_SHELL_H_
 
 #include <utility>
 #include <vector>
 
@@ skipping 256 matching lines @@
   // Creates a default views::NonClientFrameView for use by windows in the
   // Ash environment.
   views::NonClientFrameView* CreateDefaultNonClientFrameView(
       views::Widget* widget);
 
   // Rotates focus through containers that can receive focus.
   void RotateFocus(Direction direction);
 
   // Sets the work area insets of the display that contains |window|,
   // this notifies observers too.
-  // TODO(sky): this no longer really replicates what happens and is unreliable.
-  // Remove this.
-  void SetDisplayWorkAreaInsets(aura::Window* window,
-                                const gfx::Insets& insets);
+  void UpdateDisplayWorkAreaInsets(aura::Window* root_window);
+
+  void SetDisplayWorkAreaInsetsForTesting(aura::Window* root_window,
+                                          const gfx::Insets& insets);
 
   // Called when the user logs in.
   void OnLoginStateChanged(user::LoginStatus status);
 
   // Called after the logged-in user's profile is ready.
   void OnLoginUserProfilePrepared();
 
   // Called when the login status changes.
   // TODO(oshima): Investigate if we can merge this and |OnLoginStateChanged|.
   void UpdateAfterLoginStatusChange(user::LoginStatus status);
@@ skipping 477 matching lines @@
   scoped_ptr<GPUSupport> gpu_support_;
 
   base::SequencedWorkerPool* blocking_pool_;
 
   DISALLOW_COPY_AND_ASSIGN(Shell);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_H_