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

chrome/browser/ui/cocoa/page_info_bubble_controller.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/page_info_bubble_controller.h"
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop.h"
@@ skipping 193 matching lines @@
 
 - (IBAction)showCertWindow:(id)sender {
   DCHECK(certID_ != 0);
   ShowCertificateViewerByID([self parentWindow], certID_);
 }
 
 - (IBAction)showHelpPage:(id)sender {
   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);
 }
 
 // This will create the subviews for the page info window. The general layout
 // is 2 or 3 boxed and titled sections, each of which has a status image to
 // provide visual feedback and a description that explains it. The description
 // text is usually only 1 or 2 lines, but can be much longer. At the bottom of
 // the window is a button to view the SSL certificate, which is disabled if
 // not using HTTPS.
 - (void)performLayout {
   // |offset| is the Y position that should be drawn at next.
@@ skipping 245 matching lines @@
     LocationBarViewMac* locationBar = [controller locationBarBridge];
     if (locationBar) {
       NSPoint bubblePoint = locationBar->GetPageInfoBubblePoint();
       origin = [parent convertBaseToScreen:bubblePoint];
     }
   }
   return origin;
 }
 
 @end