Move RendererPreferences to content/public/common and also put in the content namespace.

chrome/browser/tab_contents/background_contents.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/tab_contents/background_contents.h"
 
 #include "chrome/browser/background/background_contents_service.h"
 #include "chrome/browser/extensions/extension_message_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/renderer_preferences_util.h"
@@ skipping 158 matching lines @@
       content::Source<Profile>(profile),
       content::Details<BackgroundContents>(this));
 
   // Our RenderView went away, so we should go away also, so killing the process
   // via the TaskManager doesn't permanently leave a BackgroundContents hanging
   // around the system, blocking future instances from being created
   // (http://crbug.com/65189).
   delete this;
 }
 
-RendererPreferences BackgroundContents::GetRendererPrefs(
+content::RendererPreferences BackgroundContents::GetRendererPrefs(
     content::BrowserContext* browser_context) const {
   Profile* profile = Profile::FromBrowserContext(browser_context);
-  RendererPreferences preferences;
+  content::RendererPreferences preferences;
   renderer_preferences_util::UpdateFromSystemSettings(&preferences, profile);
   return preferences;
 }
 
 WebPreferences BackgroundContents::GetWebkitPrefs() {
   WebPreferences prefs =
       RenderViewHostDelegateHelper::GetWebkitPrefs(render_view_host_);
 
   // Disable all kinds of acceleration for background pages.
   // See http://crbug.com/96005 and http://crbug.com/96006
@@ skipping 53 matching lines @@
 BackgroundContents*
 BackgroundContents::GetBackgroundContentsByID(int render_process_id,
                                               int render_view_id) {
   RenderViewHost* render_view_host =
       RenderViewHost::FromID(render_process_id, render_view_id);
   if (!render_view_host)
     return NULL;
 
   return render_view_host->delegate()->GetAsBackgroundContents();
 }