Move more files into the content namespace.

content/browser/renderer_host/popup_menu_helper_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 <Carbon/Carbon.h>
 
 #include "content/browser/renderer_host/popup_menu_helper_mac.h"
 
 #import "base/mac/scoped_sending_event.h"
 #include "base/memory/scoped_nsobject.h"
 #include "base/message_loop.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_view_mac.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/notification_types.h"
 #import "ui/base/cocoa/base_view.h"
 #include "webkit/glue/webmenurunner_mac.h"
 
-using content::RenderViewHost;
-using content::RenderViewHostImpl;
-using content::RenderWidgetHost;
+namespace content {
 
 PopupMenuHelper::PopupMenuHelper(RenderViewHost* render_view_host)
     : render_view_host_(static_cast<RenderViewHostImpl*>(render_view_host)) {
   notification_registrar_.Add(
-      this, content::NOTIFICATION_RENDER_WIDGET_HOST_DESTROYED,
-      content::Source<RenderWidgetHost>(render_view_host));
+      this, NOTIFICATION_RENDER_WIDGET_HOST_DESTROYED,
+      Source<RenderWidgetHost>(render_view_host));
 }
 
 void PopupMenuHelper::ShowPopupMenu(
     const gfx::Rect& bounds,
     int item_height,
     double item_font_size,
     int selected_item,
     const std::vector<WebMenuItem>& items,
     bool right_aligned,
     bool allow_multiple_selection) {
@@ skipping 39 matching lines @@
   }
 
   if ([menu_runner menuItemWasChosen]) {
     render_view_host_->DidSelectPopupMenuItem(
         [menu_runner indexOfSelectedItem]);
   } else {
     render_view_host_->DidCancelPopupMenu();
   }
 }
 
-void PopupMenuHelper::Observe(
-    int type,
-    const content::NotificationSource& source,
-    const content::NotificationDetails& details) {
-  DCHECK(type == content::NOTIFICATION_RENDER_WIDGET_HOST_DESTROYED);
-  DCHECK(content::Source<RenderWidgetHost>(source).ptr() == render_view_host_);
+void PopupMenuHelper::Observe(int type,
+                              const NotificationSource& source,
+                              const NotificationDetails& details) {
+  DCHECK(type == NOTIFICATION_RENDER_WIDGET_HOST_DESTROYED);
+  DCHECK(Source<RenderWidgetHost>(source).ptr() == render_view_host_);
   render_view_host_ = NULL;
 }
 
+}  // namespace content