Add bookmark promo to NTP on first run.

chrome/browser/dom_ui/tips_handler.cc

 // Copyright (c) 2009 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 <string>
 
 #include "app/l10n_util.h"
 #include "base/callback.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
@@ skipping 36 matching lines @@
   PrefService* current_prefs = dom_ui_->GetProfile()->GetPrefs();
   if (current_prefs->HasPrefPath(prefs::kNTPTipsServer)) {
     std::string server = current_prefs->GetString(prefs::kNTPTipsServer);
     std::string locale = g_browser_process->GetApplicationLocale();
     if (!EndsWith(server, locale, false)) {
       dom_ui_->CallJavascriptFunction(L"tips", list_value);
       return;
     }
   }
 
+  // If the user has just started using Chrome with a fresh profile, send only
+  // the "Import bookmarks" promo until the user has either seen it five times
+  // or added or imported bookmarks.
+  if (current_prefs->GetInteger(prefs::kNTPPromoViewsRemaining) > 0) {
+    SendTip(WideToUTF8(l10n_util::GetStringF(IDS_IMPORT_BOOKMARKS_PROMO,
+        std::wstring(L"<button class='link'>"),
+        std::wstring(L"</button>"))),
+        L"set_promo_tip", 0);
+    return;
+  }
+
   if (tips_cache_ != NULL && !tips_cache_->empty()) {
     if (tips_cache_->GetInteger(
         WebResourceService::kCurrentTipPrefName, &current_tip_index) &&
         tips_cache_->GetList(
         WebResourceService::kTipCachePrefName, &wr_list) &&
         wr_list && wr_list->GetSize() > 0) {
       if (wr_list->GetSize() <= static_cast<size_t>(current_tip_index)) {
         // Check to see whether the home page is set to NTP; if not, add tip
         // to set home page before resetting tip index to 0.
         current_tip_index = 0;
@@ skipping 34 matching lines @@
   prefs->RegisterDictionaryPref(prefs::kNTPTipsCache);
   prefs->RegisterStringPref(prefs::kNTPTipsServer,
                             WebResourceService::kDefaultResourceServer);
 }
 
 bool TipsHandler::IsValidURL(const std::wstring& url_string) {
   GURL url(WideToUTF8(url_string));
   return !url.is_empty() && (url.SchemeIs(chrome::kHttpScheme) ||
                              url.SchemeIs(chrome::kHttpsScheme));
 }