Basic metro snap view omnibox.

chrome/browser/ui/views/location_bar/location_bar_container.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 "chrome/browser/ui/views/location_bar/location_bar_container.h"
 
 #include "chrome/browser/ui/views/location_bar/location_bar_view.h"
 #include "chrome/browser/ui/webui/instant_ui.h"
 #include "ui/base/event.h"
 #include "ui/views/background.h"
@@ skipping 20 matching lines @@
     view_parent_->set_background(
         views::Background::CreateSolidBackground(GetBackgroundColor()));
   }
   SetLayoutManager(new views::FillLayout);
 }
 
 LocationBarContainer::~LocationBarContainer() {
 }
 
 void LocationBarContainer::SetLocationBarView(LocationBarView* view) {
-  DCHECK(!location_bar_view_ && view);
+  DCHECK(view);
+
+  if (location_bar_view_) {
+    view_parent_->RemoveChildView(location_bar_view_);
+  }
+
   location_bar_view_ = view;
   view_parent_->AddChildView(location_bar_view_);
   DCHECK_EQ(1, view_parent_->child_count());  // Only support one child.
 }
 
 void LocationBarContainer::AnimateTo(const gfx::Rect& bounds) {
   // Animation duration can change during session.
   animator_.SetAnimationDuration(GetAnimationDuration());
   animator_.AnimateViewTo(this, bounds);
 }
@@ skipping 26 matching lines @@
 
 void LocationBarContainer::OnBoundsAnimatorDone(
     views::BoundsAnimator* animator) {
   SetInToolbar(true);
 }
 
 // static
 int LocationBarContainer::GetAnimationDuration() {
   return kAnimationDuration * InstantUI::GetSlowAnimationScaleFactor();
 }