Adds support for showing the match preview on views. It's behind the

chrome/browser/views/location_bar/location_bar_view.cc

 // Copyright (c) 2010 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/views/location_bar/location_bar_view.h"
 
 #if defined(OS_LINUX)
 #include <gtk/gtk.h>
 #endif
 
 #include "app/drag_drop_types.h"
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "app/theme_provider.h"
 #include "chrome/app/chrome_dll_resource.h"
 #include "chrome/browser/alternate_nav_url_fetcher.h"
 #include "chrome/browser/extensions/extension_browser_event_router.h"
 #include "chrome/browser/extensions/extensions_service.h"
 #include "chrome/browser/profile.h"
 #include "chrome/browser/search_engines/template_url_model.h"
+#include "chrome/browser/tab_contents/match_preview.h"
 #include "chrome/browser/view_ids.h"
 #include "chrome/browser/views/browser_dialogs.h"
 #include "chrome/browser/views/location_bar/content_setting_image_view.h"
 #include "chrome/browser/views/location_bar/ev_bubble_view.h"
 #include "chrome/browser/views/location_bar/keyword_hint_view.h"
 #include "chrome/browser/views/location_bar/location_icon_view.h"
 #include "chrome/browser/views/location_bar/page_action_image_view.h"
 #include "chrome/browser/views/location_bar/page_action_with_badge_view.h"
 #include "chrome/browser/views/location_bar/selected_keyword_view.h"
 #include "chrome/browser/views/location_bar/star_view.h"
@@ skipping 673 matching lines @@
     }
   }
 }
 
 void LocationBarView::OnChanged() {
   location_icon_view_->SetImage(
       ResourceBundle::GetSharedInstance().GetBitmapNamed(
           location_entry_->GetIcon()));
   Layout();
   SchedulePaint();
+
+  if (MatchPreview::IsEnabled() && GetTabContents() &&
+      !profile_->IsOffTheRecord()) {
+    GURL url = location_entry_->model()->user_input_in_progress() ?
+        location_entry_->model()->CurrentURL() : GURL();
+    GetTabContents()->match_preview()->Update(url);
+  }
 }
 
 void LocationBarView::OnInputInProgress(bool in_progress) {
   delegate_->OnInputInProgress(in_progress);
 }
 
 void LocationBarView::OnKillFocus() {
 }
 
 void LocationBarView::OnSetFocus() {
@@ skipping 329 matching lines @@
 
   NOTREACHED();
 }
 
 void LocationBarView::OnTemplateURLModelChanged() {
   template_url_model_->RemoveObserver(this);
   template_url_model_ = NULL;
   ShowFirstRunBubble(bubble_type_);
 }