Show ChromeVox caption panel when spoken feedback is enabled.

ash/wm/workspace/workspace_layout_manager_unittest.cc

 // 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.
 
 #include "ash/wm/workspace/workspace_layout_manager.h"
 
 #include <string>
 
 #include "ash/display/display_layout.h"
 #include "ash/display/display_manager.h"
@@ skipping 1003 matching lines @@
   }
 
   aura::Window* CreateTestWindow(const gfx::Rect& bounds) {
     return CreateTestWindowInShellWithBounds(bounds);
   }
 
   void ShowKeyboard() {
     layout_manager_->OnKeyboardBoundsChanging(keyboard_bounds_);
     restore_work_area_insets_ = Shell::GetScreen()->GetPrimaryDisplay().
         GetWorkAreaInsets();
-    Shell::GetInstance()->SetDisplayWorkAreaInsets(
+    Shell::GetInstance()->SetDisplayWorkAreaInsetsForTesting(
         Shell::GetPrimaryRootWindow(),
         gfx::Insets(0, 0, keyboard_bounds_.height(), 0));
   }
 
   void HideKeyboard() {
-    Shell::GetInstance()->SetDisplayWorkAreaInsets(
-        Shell::GetPrimaryRootWindow(),
-        restore_work_area_insets_);
+    Shell::GetInstance()->SetDisplayWorkAreaInsetsForTesting(
+        Shell::GetPrimaryRootWindow(), restore_work_area_insets_);
     layout_manager_->OnKeyboardBoundsChanging(gfx::Rect());
   }
 
   void SetKeyboardBounds(const gfx::Rect& bounds) {
     keyboard_bounds_ = bounds;
   }
 
  private:
   gfx::Insets restore_work_area_insets_;
   gfx::Rect keyboard_bounds_;
@@ skipping 87 matching lines @@
   EXPECT_EQ(gfx::Rect(50,
                       keyboard_bounds.y() - keyboard_bounds.height()/2,
                       occluded_window_bounds.width(),
                       occluded_window_bounds.height()).ToString(),
             window->bounds().ToString());
   HideKeyboard();
   EXPECT_EQ(occluded_window_bounds.ToString(), window->bounds().ToString());
 }
 
 }  // namespace ash