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

chrome/browser/ui/webui/ntp/new_tab_ui.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 "build/build_config.h"
 
 #include "chrome/browser/ui/webui/ntp/new_tab_ui.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 61 matching lines @@
   // Override some options on the Web UI.
   hide_favicon_ = true;
 
   focus_location_bar_by_default_ = true;
   should_hide_url_ = true;
   overridden_title_ = l10n_util::GetStringUTF16(IDS_NEW_TAB_TITLE);
 
   // We count all link clicks as AUTO_BOOKMARK, so that site can be ranked more
   // highly. Note this means we're including clicks on not only most visited
   // thumbnails, but also clicks on recently bookmarked.
-  link_transition_type_ = PageTransition::AUTO_BOOKMARK;
+  link_transition_type_ = content::PAGE_TRANSITION_AUTO_BOOKMARK;
 
   if (!GetProfile()->IsOffTheRecord()) {
     PrefService* pref_service = GetProfile()->GetPrefs();
     AddMessageHandler((new ShownSectionsHandler(pref_service))->Attach(this));
     AddMessageHandler((new browser_sync::ForeignSessionHandler())->
         Attach(this));
     AddMessageHandler((new MostVisitedHandler())->Attach(this));
     AddMessageHandler((new RecentlyClosedTabsHandler())->Attach(this));
     AddMessageHandler((new MetricsHandler())->Attach(this));
     if (GetProfile()->IsSyncAccessible())
@@ skipping 244 matching lines @@
   SendResponse(request_id, html_bytes);
 }
 
 std::string NewTabUI::NewTabHTMLSource::GetMimeType(const std::string&) const {
   return "text/html";
 }
 
 bool NewTabUI::NewTabHTMLSource::ShouldReplaceExistingSource() const {
   return false;
 }