Give up focus if the focused view becomes unfocusable

ui/views/view_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 <map>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/rand_util.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 2752 matching lines @@
 
   View* child = new View();
   root.AddChildView(child);
 
   View* foo1 = new View();
   child->AddChildView(foo1);
   View* foo2 = new View();
   child->AddChildView(foo2);
   View* foo3 = new View();
   child->AddChildView(foo3);
-  foo1->set_focusable(true);
-  foo2->set_focusable(true);
-  foo3->set_focusable(true);
+  foo1->SetFocusable(true);
+  foo2->SetFocusable(true);
+  foo3->SetFocusable(true);
 
   ASSERT_EQ(0, child->GetIndexOf(foo1));
   ASSERT_EQ(1, child->GetIndexOf(foo2));
   ASSERT_EQ(2, child->GetIndexOf(foo3));
   ASSERT_EQ(foo2, foo1->GetNextFocusableView());
   ASSERT_EQ(foo3, foo2->GetNextFocusableView());
   ASSERT_EQ(NULL, foo3->GetNextFocusableView());
 
   // Move |foo2| at the end.
   child->ReorderChildView(foo2, -1);
@@ skipping 696 matching lines @@
   const std::vector<ui::Layer*>& child_layers_post = root_layer->children();
   ASSERT_EQ(3u, child_layers_post.size());
   EXPECT_EQ(v1->layer(), child_layers_post[0]);
   EXPECT_EQ(v2->layer(), child_layers_post[1]);
   EXPECT_EQ(v1_old_layer, child_layers_post[2]);
 }
 
 #endif  // USE_AURA
 
 }  // namespace views