Give up focus if the focused view becomes unfocusable

ash/wm/immersive_fullscreen_controller_unittest.cc

 // Copyright 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.
 
 #include "ash/wm/immersive_fullscreen_controller.h"
 
 #include "ash/display/display_manager.h"
 #include "ash/root_window_controller.h"
 #include "ash/screen_ash.h"
 #include "ash/shelf/shelf_layout_manager.h"
@@ skipping 113 matching lines @@
     params.context = CurrentContext();
     widget_->Init(params);
     widget_->Show();
 
     window()->SetProperty(aura::client::kShowStateKey,
                           ui::SHOW_STATE_FULLSCREEN);
 
     top_container_ = new views::View();
     top_container_->SetBounds(
         0, 0, widget_->GetWindowBoundsInScreen().width(), 100);
-    top_container_->set_focusable(true);
+    top_container_->SetFocusable(true);
     widget_->GetContentsView()->AddChildView(top_container_);
 
     delegate_.reset(
         new MockImmersiveFullscreenControllerDelegate(top_container_));
     controller_.reset(new ImmersiveFullscreenController);
     controller_->Init(delegate_.get(), widget_, top_container_);
     controller_->SetupForTest();
 
     // The mouse is moved so that it is not over |top_container_| by
     // AshTestBase.
@@ skipping 526 matching lines @@
 // Windows. (crbug.com/79493)
 #if !defined(OS_WIN)
 
 // Test how focus and activation affects whether the top-of-window views are
 // revealed.
 TEST_F(ImmersiveFullscreenControllerTest, Focus) {
   // Add views to the view hierarchy which we will focus and unfocus during the
   // test.
   views::View* child_view = new views::View();
   child_view->SetBounds(0, 0, 10, 10);
-  child_view->set_focusable(true);
+  child_view->SetFocusable(true);
   top_container()->AddChildView(child_view);
   views::View* unrelated_view = new views::View();
   unrelated_view->SetBounds(0, 100, 10, 10);
-  unrelated_view->set_focusable(true);
+  unrelated_view->SetFocusable(true);
   top_container()->parent()->AddChildView(unrelated_view);
   views::FocusManager* focus_manager =
       top_container()->GetWidget()->GetFocusManager();
 
   controller()->SetEnabled(true);
 
   // 1) Test that the top-of-window views stay revealed as long as either a
   // |child_view| has focus or the mouse is hovered above the top-of-window
   // views.
   AttemptReveal(MODALITY_MOUSE);
@@ skipping 247 matching lines @@
   // Disabling immersive fullscreen maintains the user's auto-hide selection.
   controller()->SetEnabled(false);
   window()->SetProperty(aura::client::kShowStateKey,
                         ui::SHOW_STATE_NORMAL);
   EXPECT_EQ(ash::SHELF_AUTO_HIDE, shelf->visibility_state());
 }
 
 }  // namespase ash
 
 #endif  // defined(OS_CHROMEOS)