Move PageTransition into content namespace. While I'm touching all these files, I've also updated...

chrome/browser/importer/importer_host.cc

 // Copyright (c) 2011 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/importer/importer_host.h"
 
 #include "base/bind.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/bookmarks/bookmark_model.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 150 matching lines @@
   if (!result) {
     ui::MessageBox(
         NULL,
         UTF16ToWide(l10n_util::GetStringUTF16(
             IDS_IMPORTER_GOOGLE_LOGIN_TEXT)).c_str(),
         L"",
         MB_OK | MB_TOPMOST);
 
     GURL url("https://www.google.com/accounts/ServiceLogin");
     BrowserList::GetLastActive()->AddSelectedTabWithURL(
-        url, PageTransition::TYPED);
+        url, content::PAGE_TRANSITION_TYPED);
 
     MessageLoop::current()->PostTask(FROM_HERE, base::Bind(
         &ImporterHost::OnImportLockDialogEnd, this, false));
   } else {
     is_source_readable_ = true;
     InvokeTaskIfDone();
   }
 #endif
 }
 
@@ skipping 78 matching lines @@
 void ImporterHost::BookmarkModelChanged() {
 }
 
 void ImporterHost::Observe(int type,
                            const NotificationSource& source,
                            const NotificationDetails& details) {
   DCHECK(type == chrome::NOTIFICATION_TEMPLATE_URL_SERVICE_LOADED);
   registrar_.RemoveAll();
   InvokeTaskIfDone();
 }