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

chrome/browser/ui/views/page_info_bubble_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/page_info_bubble_view.h"
 
 #include <algorithm>
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/certificate_viewer.h"
@@ skipping 303 matching lines @@
 
 void PageInfoBubbleView::LinkClicked(views::Link* source, int event_flags) {
   // We want to make sure the info bubble closes once the link is activated.  So
   // we close it explicitly rather than relying on a side-effect of opening a
   // new tab (see http://crosbug.com/10186).
   bubble_->Close();
 
   GURL url = google_util::AppendGoogleLocaleParam(
       GURL(chrome::kPageInfoHelpCenterURL));
   Browser* browser = BrowserList::GetLastActive();
-  browser->OpenURL(url, GURL(), NEW_FOREGROUND_TAB, PageTransition::LINK);
+  browser->OpenURL(
+      url, GURL(), NEW_FOREGROUND_TAB, content::PAGE_TRANSITION_LINK);
 }
 
 void PageInfoBubbleView::AnimationEnded(const ui::Animation* animation) {
   LayoutSections();
   bubble_->SizeToContents();
 }
 
 void PageInfoBubbleView::AnimationProgressed(const ui::Animation* animation) {
   LayoutSections();
   bubble_->SizeToContents();
@@ skipping 163 matching lines @@
   PageInfoBubbleView* page_info_bubble =
       new PageInfoBubbleView(browser_view->GetNativeHandle(),
                              profile, url, ssl, show_history);
   Bubble* bubble =
       Bubble::Show(browser_view->GetWidget(), bounds,
                    views::BubbleBorder::TOP_LEFT,
                    page_info_bubble, page_info_bubble);
   page_info_bubble->set_bubble(bubble);
 }
 }