Hide NativeViewHostAura correctly.

ui/views/controls/native/native_view_host_aura.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/controls/native/native_view_host_aura.h"
 
 #include "base/logging.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/client/focus_client.h"
 #include "ui/aura/window.h"
@@ skipping 146 matching lines @@
                                         : gfx::Rect(x, y, w, h));
 
   gfx::Point clip_offset = clipping_window_.bounds().origin();
   host_->native_view()->SetBounds(
       gfx::Rect(x - clip_offset.x(), y - clip_offset.y(), width, height));
   host_->native_view()->Show();
   clipping_window_.Show();
 }
 
 void NativeViewHostAura::HideWidget() {
   host_->native_view()->Hide();

[sky, 2014/09/02 15:19:37]

We may not need the Hide/Show on native_view() anymore. But we can experiment
with that separately.

[calamity, 2014/09/03 00:44:22]

Acknowledged.

+  clipping_window_.Hide();
 }
 
 void NativeViewHostAura::SetFocus() {
   aura::Window* window = host_->native_view();
   aura::client::FocusClient* client = aura::client::GetFocusClient(window);
   if (client)
     client->FocusWindow(window);
 }
 
 gfx::NativeViewAccessible NativeViewHostAura::GetNativeViewAccessible() {
@@ skipping 47 matching lines @@
     } else {
       clipping_window_.RemoveChild(host_->native_view());
     }
     host_->native_view()->SetBounds(clipping_window_.bounds());
   }
   if (clipping_window_.parent())
     clipping_window_.parent()->RemoveChild(&clipping_window_);
 }
 
 }  // namespace views