Update RenderPreferences on GTK change.

chrome/browser/tab_contents/tab_contents.cc

 // Copyright (c) 2009 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/tab_contents.h"
 
 #include "app/gfx/text_elider.h"
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "base/file_version_info.h"
@@ skipping 240 matching lines @@
       capturing_contents_(false),
       is_being_destroyed_(false),
       notify_disconnection_(false),
       history_requests_(),
 #if defined(OS_WIN)
       message_box_active_(CreateEvent(NULL, TRUE, FALSE, NULL)),
 #endif
       last_javascript_message_dismissal_(),
       suppress_javascript_messages_(false),
       is_showing_before_unload_dialog_(false),
-      renderer_preferences_(
-        renderer_preferences_util::GetInitedRendererPreferences(profile)),
+      renderer_preferences_(),
       opener_dom_ui_type_(DOMUIFactory::kNoDOMUI) {
+  renderer_preferences_util::UpdateFromSystemSettings(
+      &renderer_preferences_, profile);
+
 #if defined(OS_CHROMEOS)
   // Make sure the thumbnailer is started before starting the render manager.
   // The thumbnailer will want to listen for RVH creations, one of which will
   // happen in RVHManager::Init.
   ThumbnailGenerator* generator = g_browser_process->GetThumbnailGenerator();
   if (generator)
     generator->StartThumbnailing();
 #endif
 
   render_manager_.Init(profile, site_instance, routing_id);
@@ skipping 2308 matching lines @@
       DCHECK(&controller_ == Source<NavigationController>(source).ptr());
 
       NavigationController::LoadCommittedDetails& committed_details =
           *(Details<NavigationController::LoadCommittedDetails>(details).ptr());
       ExpireInfoBars(committed_details);
       break;
     }
 
 #if defined(OS_LINUX)
     case NotificationType::BROWSER_THEME_CHANGED: {
+      renderer_preferences_util::UpdateFromSystemSettings(
+          &renderer_preferences_, profile());
       render_view_host()->SyncRendererPrefs();
       break;
     }
 #endif
 
     default:
       NOTREACHED();
   }
 }
 
@@ skipping 45 matching lines @@
   render_view_host()->JavaScriptMessageBoxClosed(reply_msg, success, prompt);
 }
 
 void TabContents::SetSuppressMessageBoxes(bool suppress_message_boxes) {
   set_suppress_javascript_messages(suppress_message_boxes);
 }
 
 void TabContents::set_encoding(const std::string& encoding) {
   encoding_ = CharacterEncoding::GetCanonicalEncodingNameByAliasName(encoding);
 }