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

chrome/browser/ui/views/instant_confirm_view.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/ui/views/instant_confirm_view.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/instant/instant_confirm_dialog.h"
 #include "chrome/browser/instant/instant_controller.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 63 matching lines @@
   return gfx::Size(pref_width, pref_height);
 }
 
 bool InstantConfirmView::IsModal() const {
   return true;
 }
 
 void InstantConfirmView::LinkClicked(views::Link* source, int event_flags) {
   Browser* browser = BrowserList::GetLastActive();
   browser->OpenURL(browser::InstantLearnMoreURL(), GURL(),
-                   NEW_FOREGROUND_TAB, PageTransition::TYPED);
+                   NEW_FOREGROUND_TAB, content::PAGE_TRANSITION_TYPED);
 }
 
 namespace browser {
 
 void ShowInstantConfirmDialog(gfx::NativeWindow parent, Profile* profile) {
   views::Widget::CreateWindowWithParent(new InstantConfirmView(profile),
                                         parent)->Show();
 }
 
 }  // namespace browser