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

chrome/browser/history/top_sites_unittest.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 "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/format_macros.h"
 #include "base/path_service.h"
@@ skipping 220 matching lines @@
   // message loop.
   void QuitCallback(TopSitesBackend::Handle handle) {
     MessageLoop::current()->Quit();
   }
 
   // Adds a page to history.
   void AddPageToHistory(const GURL& url) {
     RedirectList redirects;
     redirects.push_back(url);
     history_service()->AddPage(
-        url, static_cast<void*>(this), 0, GURL(), PageTransition::TYPED,
+        url, static_cast<void*>(this), 0, GURL(),
+        content::PAGE_TRANSITION_TYPED,
         redirects, history::SOURCE_BROWSED, false);
   }
 
   // Adds a page to history.
   void AddPageToHistory(const GURL& url, const string16& title) {
     RedirectList redirects;
     redirects.push_back(url);
     history_service()->AddPage(
-        url, static_cast<void*>(this), 0, GURL(), PageTransition::TYPED,
+        url, static_cast<void*>(this), 0, GURL(),
+        content::PAGE_TRANSITION_TYPED,
         redirects, history::SOURCE_BROWSED, false);
     history_service()->SetPageTitle(url, title);
   }
 
   // Adds a page to history.
   void AddPageToHistory(const GURL& url,
                         const string16& title,
                         const history::RedirectList& redirects,
                         base::Time time) {
     history_service()->AddPage(
-        url, time, static_cast<void*>(this), 0, GURL(), PageTransition::TYPED,
+        url, time, static_cast<void*>(this), 0, GURL(),
+        content::PAGE_TRANSITION_TYPED,
         redirects, history::SOURCE_BROWSED, false);
     history_service()->SetPageTitle(url, title);
   }
 
   // Delets a url.
   void DeleteURL(const GURL& url) {
     history_service()->DeleteURL(url);
   }
 
   // Returns true if the thumbnail equals the specified bytes.
@@ skipping 1113 matching lines @@
   ui_test_utils::WindowedNotificationObserver observer(
       chrome::NOTIFICATION_TOP_SITES_LOADED,
       Source<Profile>(profile()));
   profile()->CreateTopSites();
   profile()->GetHistoryService(Profile::EXPLICIT_ACCESS)->UnloadBackend();
   profile()->BlockUntilHistoryProcessesPendingRequests();
   observer.Wait();
 }
 
 }  // namespace history