Move Extension into extensions namespace

chrome/browser/app_controller_mac.mm

 // Copyright (c) 2012 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/app_controller_mac.h"
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/file_path.h"
@@ skipping 907 matching lines @@
 }
 
 // Run a (background) application in a new tab.
 - (void)executeApplication:(id)sender {
   NSInteger tag = [sender tag];
   Profile* profile = [self lastProfile];
   DCHECK(profile);
   BackgroundApplicationListModel applications(profile);
   DCHECK(tag >= 0 &&
          tag < static_cast<int>(applications.size()));
-  const Extension* extension = applications.GetExtension(tag);
+  const extensions::Extension* extension = applications.GetExtension(tag);
   BackgroundModeManager::LaunchBackgroundApplication(profile, extension);
 }
 
 // Same as |-commandDispatch:|, but executes commands using a disposition
 // determined by the key flags. This will get called in the case where the
 // frontmost window is not a browser window, and the user has command-clicked
 // a button in a background browser window whose action is
 // |-commandDispatchUsingKeyModifiers:|
 - (void)commandDispatchUsingKeyModifiers:(id)sender {
   DCHECK(sender);
@@ skipping 293 matching lines @@
   // tests which use the mock in place of the profile-initialized model.
 
   // Avoid breaking unit tests which have no profile.
   if (profile) {
     BackgroundApplicationListModel applications(profile);
     if (applications.size()) {
       int position = 0;
       NSString* menuStr =
           l10n_util::GetNSStringWithFixup(IDS_BACKGROUND_APPS_MAC);
       scoped_nsobject<NSMenu> appMenu([[NSMenu alloc] initWithTitle:menuStr]);
-      for (ExtensionList::const_iterator cursor = applications.begin();
+      for (extensions::ExtensionList::const_iterator cursor =
+            applications.begin();
            cursor != applications.end();
            ++cursor, ++position) {
         DCHECK_EQ(applications.GetPosition(*cursor), position);
         NSString* itemStr =
             base::SysUTF16ToNSString(UTF8ToUTF16((*cursor)->name()));
         scoped_nsobject<NSMenuItem> appItem([[NSMenuItem alloc]
             initWithTitle:itemStr
                    action:@selector(commandFromDock:)
             keyEquivalent:@""]);
         [appItem setTarget:self];
@@ skipping 62 matching lines @@
 
 }  // namespace browser
 
 namespace app_controller_mac {
 
 bool IsOpeningNewWindow() {
   return g_is_opening_new_window;
 }
 
 }  // namespace app_controller_mac