Use high resolution icons where possible for streamlined hosted app icons.

chrome/browser/ui/browser_tab_contents.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/browser_tab_contents.h"
 
 #include "base/command_line.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
 #include "chrome/browser/extensions/api/web_navigation/web_navigation_api.h"
@@ skipping 29 matching lines @@
 #include "chrome/browser/ui/find_bar/find_tab_helper.h"
 #include "chrome/browser/ui/hung_plugin_tab_helper.h"
 #include "chrome/browser/ui/passwords/manage_passwords_icon_controller.h"
 #include "chrome/browser/ui/pdf/pdf_tab_helper.h"
 #include "chrome/browser/ui/prefs/prefs_tab_helper.h"
 #include "chrome/browser/ui/sad_tab_helper.h"
 #include "chrome/browser/ui/search/search_tab_helper.h"
 #include "chrome/browser/ui/search_engines/search_engine_tab_helper.h"
 #include "chrome/browser/ui/sync/tab_contents_synced_tab_delegate.h"
 #include "chrome/browser/ui/tab_contents/core_tab_helper.h"
+#include "chrome/browser/ui/web_applications/hosted_app_tab_helper.h"
 #include "chrome/browser/ui/zoom/zoom_controller.h"
 #include "chrome/common/chrome_switches.h"
 #include "components/autofill/content/browser/autofill_driver_impl.h"
 #include "components/autofill/core/browser/autofill_manager.h"
 #include "components/web_modal/web_contents_modal_dialog_manager.h"
 #include "content/public/browser/web_contents.h"
 #include "extensions/browser/view_type_utils.h"
 
 #if defined(ENABLE_CAPTIVE_PORTAL_DETECTION)
 #include "chrome/browser/captive_portal/captive_portal_tab_helper.h"
@@ skipping 137 matching lines @@
                                      std::string(),
                                      NULL)) {
     OneClickSigninHelper::CreateForWebContentsWithPasswordManager(
         web_contents, PasswordManager::FromWebContents(web_contents));
   }
 #endif
 
 #if defined(OS_WIN)
   MetroPinTabHelper::CreateForWebContents(web_contents);
 #endif
+
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kEnableStreamlinedHostedApps))
+    HostedAppTabHelper::CreateForWebContents(web_contents);
 }