Hook up proper FocusController for simple_wm.

ui/views/window/custom_frame_view.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 "ui/views/window/custom_frame_view.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/strings/utf_string_conversions.h"
@@ skipping 189 matching lines @@
 void CustomFrameView::UpdateWindowTitle() {
   if (frame_->widget_delegate()->ShouldShowWindowTitle())
     SchedulePaintInRect(title_bounds_);
 }
 
 void CustomFrameView::SizeConstraintsChanged() {
   ResetWindowControls();
   LayoutWindowControls();
 }
 
+void CustomFrameView::ActivationChanged(bool active) {
+  if (active_ == active)
+    return;
+  active_ = active;
+  SchedulePaint();
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 // CustomFrameView, View overrides:
 
 void CustomFrameView::OnPaint(gfx::Canvas* canvas) {
   if (!ShouldShowTitleBarAndBorder())
     return;
 
   if (frame_->IsMaximized())
     PaintMaximizedFrameBorder(canvas);
   else
@@ skipping 411 matching lines @@
     }
     case views::FRAME_BUTTON_CLOSE: {
       button = close_button_;
       break;
     }
   }
   return button;
 }
 
 }  // namespace views