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

chrome/browser/tab_contents/tab_contents.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/tab_contents/tab_contents.h"
 
 #if defined(OS_CHROMEOS)
 // For GdkScreen
 #include <gdk/gdk.h>
 #endif  // defined(OS_CHROMEOS)
@@ skipping 51 matching lines @@
 #include "chrome/browser/renderer_host/render_widget_host_view.h"
 #include "chrome/browser/renderer_host/resource_request_details.h"
 #include "chrome/browser/renderer_host/site_instance.h"
 #include "chrome/browser/renderer_host/web_cache_manager.h"
 #include "chrome/browser/renderer_preferences_util.h"
 #include "chrome/browser/search_engines/template_url_fetcher.h"
 #include "chrome/browser/search_engines/template_url_model.h"
 #include "chrome/browser/sessions/session_types.h"
 #include "chrome/browser/tab_contents/infobar_delegate.h"
 #include "chrome/browser/tab_contents/interstitial_page.h"
+#include "chrome/browser/tab_contents/match_preview.h"
 #include "chrome/browser/tab_contents/navigation_entry.h"
 #include "chrome/browser/tab_contents/provisional_load_details.h"
 #include "chrome/browser/tab_contents/tab_contents_delegate.h"
 #include "chrome/browser/tab_contents/tab_contents_ssl_helper.h"
 #include "chrome/browser/tab_contents/tab_contents_view.h"
 #include "chrome/browser/tab_contents/thumbnail_generator.h"
 #include "chrome/browser/translate/page_translated_details.h"
 #include "chrome/common/bindings_policy.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension.h"
@@ skipping 335 matching lines @@
   registrar_.Add(this, NotificationType::EXTENSION_LOADED,
                  NotificationService::AllSources());
   registrar_.Add(this, NotificationType::EXTENSION_UNLOADED,
                  NotificationService::AllSources());
   registrar_.Add(this, NotificationType::EXTENSION_UNLOADED_DISABLED,
                  NotificationService::AllSources());
 
   // Set-up the showing of the omnibox search infobar if applicable.
   if (OmniboxSearchHint::IsEnabled(profile))
     omnibox_search_hint_.reset(new OmniboxSearchHint(this));
+
+  if (MatchPreview::IsEnabled())
+    match_preview_.reset(new MatchPreview(this));
 }
 
 TabContents::~TabContents() {
   is_being_destroyed_ = true;
 
   // We don't want any notifications while we're running our destructor.
   registrar_.RemoveAll();
 
   // Unregister the notifications of all observed prefs change.
   PrefService* prefs = profile()->GetPrefs();
@@ skipping 2892 matching lines @@
   AddInfoBar(new SavePasswordInfoBarDelegate(this, form_to_save));
 }
 
 Profile* TabContents::GetProfileForPasswordManager() {
   return profile();
 }
 
 bool TabContents::DidLastPageLoadEncounterSSLErrors() {
   return controller().ssl_manager()->ProcessedSSLErrorFromRequest();
 }