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

chrome/browser/task_manager/task_manager.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/task_manager/task_manager.h"
 
 #include "base/compiler_specific.h"
 #include "base/i18n/number_formatting.h"
 #include "base/i18n/rtl.h"
 #include "base/process_util.h"
@@ skipping 1027 matching lines @@
   if (!browser) {
     // On OS X, the task manager can be open without any open browser windows.
     if (!g_browser_process || !g_browser_process->profile_manager())
       return;
     Profile* profile =
         g_browser_process->profile_manager()->GetLastUsedProfile();
     if (!profile)
       return;
     browser = Browser::Create(profile);
     browser->OpenURL(GURL(chrome::kChromeUIMemoryURL), GURL(),
-                     NEW_FOREGROUND_TAB, PageTransition::LINK);
+                     NEW_FOREGROUND_TAB, content::PAGE_TRANSITION_LINK);
     browser->window()->Show();
   } else {
     browser->OpenURL(GURL(chrome::kChromeUIMemoryURL), GURL(),
-                     NEW_FOREGROUND_TAB, PageTransition::LINK);
+                     NEW_FOREGROUND_TAB, content::PAGE_TRANSITION_LINK);
 
     // In case the browser window is minimzed, show it. If |browser| is a
     // non-tabbed window, the call to OpenURL above will have opened a
     // TabContents in a tabbed browser, so we need to grab it with GetLastActive
     // before the call to show().
     if (!browser->is_type_tabbed()) {
       browser = BrowserList::GetLastActive();
       DCHECK(browser);
     }
 
@@ skipping 58 matching lines @@
     // Count the number of extensions with background pages (including
     // incognito).
     count += CountExtensionBackgroundPagesForProfile(profile);
     if (profile->HasOffTheRecordProfile()) {
       count += CountExtensionBackgroundPagesForProfile(
           profile->GetOffTheRecordProfile());
     }
   }
   return count;
 }