Give up focus if the focused view becomes unfocusable

ui/views/widget/widget_interactive_uitest.cc

 // Copyright (c) 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 "base/basictypes.h"
 #include "base/bind.h"
 #include "base/run_loop.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/views/test/widget_test.h"
 #include "ui/views/widget/widget.h"
@@ skipping 144 matching lines @@
 //    created.
 // 2. If the active aura window in widget 1 created above, is set to NULL when
 //    another top level widget is created and focused.
 // 3. On focusing the native platform window for widget 1, the active aura
 //    window for widget 1 should be set and that for widget 2 should reset.
 // TODO(ananta)
 // Discuss with erg on how to write this test for linux x11 aura.
 TEST_F(WidgetTest, DesktopNativeWidgetAuraActivationAndFocusTest) {
   // Create widget 1 and expect the active window to be its window.
   View* contents_view1 = new View;
-  contents_view1->set_focusable(true);
+  contents_view1->SetFocusable(true);
   Widget widget1;
   Widget::InitParams init_params =
       CreateParams(Widget::InitParams::TYPE_WINDOW_FRAMELESS);
   init_params.bounds = gfx::Rect(0, 0, 200, 200);
   init_params.ownership = Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
   init_params.native_widget = new DesktopNativeWidgetAura(&widget1);
   widget1.Init(init_params);
   widget1.SetContentsView(contents_view1);
   widget1.Show();
   aura::Window* root_window1= widget1.GetNativeView()->GetRootWindow();
@@ skipping 602 matching lines @@
                              ui::EF_NONE);
   widget1.GetNativeWindow()->GetDispatcher()->AsRootWindowHostDelegate()->
       OnHostMouseEvent(&mouse_event);
   EXPECT_TRUE(widget1.GetAndClearGotMouseEvent());
   EXPECT_FALSE(widget2.GetAndClearGotMouseEvent());
 }
 #endif
 
 }  // namespace test
 }  // namespace views