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

chrome/browser/alternate_nav_url_fetcher.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/alternate_nav_url_fetcher.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/infobars/infobar_tab_helper.h"
 #include "chrome/browser/intranet_redirect_detector.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 61 matching lines @@
   return UTF8ToUTF16(alternate_nav_url_.spec());
 }
 
 bool AlternateNavInfoBarDelegate::LinkClicked(
     WindowOpenDisposition disposition) {
   owner()->tab_contents()->OpenURL(
       alternate_nav_url_, GURL(), disposition,
       // Pretend the user typed this URL, so that navigating to
       // it will be the default action when it's typed again in
       // the future.
-      PageTransition::TYPED);
+      content::PAGE_TRANSITION_TYPED);
 
   // We should always close, even if the navigation did not occur within this
   // TabContents.
   return true;
 }
 
 
 // AlternateNavURLFetcher -----------------------------------------------------
 
 AlternateNavURLFetcher::AlternateNavURLFetcher(
@@ skipping 126 matching lines @@
     return;
   }
 
   InfoBarTabHelper* infobar_helper =
       TabContentsWrapper::GetCurrentWrapperForContents(
           controller_->tab_contents())->infobar_tab_helper();
   infobar_helper->AddInfoBar(
       new AlternateNavInfoBarDelegate(infobar_helper, alternate_nav_url_));
   delete this;
 }