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

chrome/browser/automation/automation_provider_win.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/automation/automation_provider.h"
 
 #include "base/debug/trace_event.h"
 #include "base/json/json_reader.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/automation/automation_browser_tracker.h"
@@ skipping 418 matching lines @@
       view_host->routing_id(), message, origin, target));
 }
 
 void AutomationProvider::NavigateInExternalTab(
     int handle, const GURL& url, const GURL& referrer,
     AutomationMsg_NavigationResponseValues* status) {
   *status = AUTOMATION_MSG_NAVIGATION_ERROR;
 
   if (tab_tracker_->ContainsHandle(handle)) {
     NavigationController* tab = tab_tracker_->GetResource(handle);
-    tab->LoadURL(url, referrer, PageTransition::TYPED, std::string());
+    tab->LoadURL(url, referrer, content::PAGE_TRANSITION_TYPED, std::string());
     *status = AUTOMATION_MSG_NAVIGATION_SUCCESS;
   }
 }
 
 void AutomationProvider::NavigateExternalTabAtIndex(
     int handle, int navigation_index,
     AutomationMsg_NavigationResponseValues* status) {
   *status = AUTOMATION_MSG_NAVIGATION_ERROR;
 
   if (tab_tracker_->ContainsHandle(handle)) {
@@ skipping 14 matching lines @@
 void AutomationProvider::OnSetZoomLevel(int handle, int zoom_level) {
   if (tab_tracker_->ContainsHandle(handle)) {
     NavigationController* tab = tab_tracker_->GetResource(handle);
     if (tab->tab_contents() && tab->tab_contents()->render_view_host()) {
       RenderViewHost* host = tab->tab_contents()->render_view_host();
       PageZoom::Function zoom = static_cast<PageZoom::Function>(zoom_level);
       host->Zoom(zoom);
     }
   }
 }