Implementing URL prefix match for history thumbnail cache.

chrome/browser/search/instant_service.cc

 // Copyright 2013 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/search/instant_service.h"
 
 #include <vector>
 
 #include "base/logging.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 75 matching lines @@
   // Set up the data sources that Instant uses on the NTP.
 #if defined(ENABLE_THEMES)
   // Listen for theme installation.
   registrar_.Add(this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
                  content::Source<ThemeService>(
                      ThemeServiceFactory::GetForProfile(profile_)));
 
   content::URLDataSource::Add(profile, new ThemeSource(profile));
 #endif  // defined(ENABLE_THEMES)
 
-  content::URLDataSource::Add(profile, new ThumbnailSource(profile));
+  content::URLDataSource::Add(profile, new ThumbnailSource(profile, false));
+  content::URLDataSource::Add(profile, new ThumbnailSource(profile, true));
   content::URLDataSource::Add(profile, new FaviconSource(
       profile, FaviconSource::FAVICON));
   content::URLDataSource::Add(profile, new LocalNtpSource(profile));
   content::URLDataSource::Add(profile, new MostVisitedIframeSource());
   registrar_.Add(this, chrome::NOTIFICATION_PROFILE_DESTROYED,
                  content::Source<Profile>(profile_));
 }
 
 InstantService::~InstantService() {
 }
@@ skipping 279 matching lines @@
        theme_service->HasCustomImage(IDR_THEME_NTP_ATTRIBUTION);
   }
 
   FOR_EACH_OBSERVER(InstantServiceObserver, observers_,
                     ThemeInfoChanged(*theme_info_));
 }
 
 InstantNTPPrerenderer* InstantService::ntp_prerenderer() {
   return &ntp_prerenderer_;
 }