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

chrome/browser/tabs/tab_strip_model_order_controller.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/tabs/tab_strip_model_order_controller.h"
 
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 
 ///////////////////////////////////////////////////////////////////////////////
 // TabStripModelOrderController, public:
 
 TabStripModelOrderController::TabStripModelOrderController(
     TabStripModel* tabstrip)
     : tabstrip_(tabstrip),
       insertion_policy_(TabStripModel::INSERT_AFTER) {
   tabstrip_->AddObserver(this);
 }
 
 TabStripModelOrderController::~TabStripModelOrderController() {
   tabstrip_->RemoveObserver(this);
 }
 
 int TabStripModelOrderController::DetermineInsertionIndex(
     TabContentsWrapper* new_contents,
-    PageTransition::Type transition,
+    content::PageTransition transition,
     bool foreground) {
   int tab_count = tabstrip_->count();
   if (!tab_count)
     return 0;
 
   // NOTE: TabStripModel enforces that all non-mini-tabs occur after mini-tabs,
   // so we don't have to check here too.
-  if (transition == PageTransition::LINK && tabstrip_->active_index() != -1) {
+  if (transition == content::PAGE_TRANSITION_LINK &&
+      tabstrip_->active_index() != -1) {
     int delta = (insertion_policy_ == TabStripModel::INSERT_AFTER) ? 1 : 0;
     if (foreground) {
       // If the page was opened in the foreground by a link click in another
       // tab, insert it adjacent to the tab that opened that link.
       return tabstrip_->active_index() + delta;
     }
     NavigationController* opener =
         &tabstrip_->GetActiveTabContents()->controller();
     // Get the index of the next item opened by this tab, and insert after
     // it...
@@ skipping 93 matching lines @@
 
 ///////////////////////////////////////////////////////////////////////////////
 // TabStripModelOrderController, private:
 
 int TabStripModelOrderController::GetValidIndex(
     int index, int removing_index) const {
   if (removing_index < index)
     index = std::max(0, index - 1);
   return index;
 }