Componentize sad_tab

chrome/browser/ui/tab_helpers.cc

Index: chrome/browser/ui/tab_helpers.cc
diff --git a/chrome/browser/ui/tab_helpers.cc b/chrome/browser/ui/tab_helpers.cc
index 036271bd0622c3925e7163acf9595ad38541bfdf..d410d730bc2b525700a56e8ee10913aeae9c72a8 100644
--- a/chrome/browser/ui/tab_helpers.cc
+++ b/chrome/browser/ui/tab_helpers.cc
@@ -44,14 +44,15 @@
 #include "chrome/browser/plugins/plugin_observer.h"
 #include "chrome/browser/safe_browsing/safe_browsing_tab_observer.h"
 #include "chrome/browser/thumbnails/thumbnail_tab_helper.h"
+#include "chrome/browser/ui/chrome_sad_tab_client.h"
 #include "chrome/browser/ui/hung_plugin_tab_helper.h"
 #include "chrome/browser/ui/passwords/manage_passwords_ui_controller.h"
-#include "chrome/browser/ui/sad_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/website_settings/permission_bubble_manager.h"
 #include "chrome/browser/ui/zoom/zoom_controller.h"
 #include "components/pdf/browser/pdf_web_contents_helper.h"
+#include "components/sad_tab/sad_tab_helper.h"
 #include "components/web_modal/web_contents_modal_dialog_manager.h"
 #endif  // defined(OS_ANDROID)
 
@@ -173,7 +174,8 @@ void TabHelpers::AttachTabHelpers(WebContents* web_contents) {
           new ChromePDFWebContentsHelperClient()));
   PermissionBubbleManager::CreateForWebContents(web_contents);
   PluginObserver::CreateForWebContents(web_contents);
-  SadTabHelper::CreateForWebContents(web_contents);
+  sad_tab::SadTabHelper::CreateForWebContentsWithClient(
+      web_contents, scoped_ptr<sad_tab::SadTabClient>(new ChromeSadTabClient));
   safe_browsing::SafeBrowsingTabObserver::CreateForWebContents(web_contents);
   SearchEngineTabHelper::CreateForWebContents(web_contents);
   TabContentsSyncedTabDelegate::CreateForWebContents(web_contents);