Switch from WebDocument::insertStyleText to ::insertUserStyleSheet for programatic CSS injection.

chrome/browser/extensions/extension_host.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/extensions/extension_host.h"
 
 #include <list>
 
 #include "base/memory/singleton.h"
 #include "base/message_loop.h"
@@ skipping 328 matching lines @@
 }
 
 void ExtensionHost::InsertInfobarCSS() {
   DCHECK(!is_background_page());
 
   static const base::StringPiece css(
       ResourceBundle::GetSharedInstance().GetRawDataResource(
       IDR_EXTENSIONS_INFOBAR_CSS));
 
   render_view_host()->Send(new ViewMsg_CSSInsertRequest(
-      render_view_host()->routing_id(), L"", css.as_string(),
-      "InfobarThemeCSS"));
+      render_view_host()->routing_id(), L"", css.as_string()));
 }
 
 void ExtensionHost::DisableScrollbarsForSmallWindows(
     const gfx::Size& size_limit) {
   render_view_host()->Send(new ViewMsg_DisableScrollbarsForSmallWindows(
       render_view_host()->routing_id(), size_limit));
 }
 
 void ExtensionHost::DidStopLoading() {
   bool notify = !did_stop_loading_;
@@ skipping 425 matching lines @@
   }
 }
 
 void ExtensionHost::OnRunFileChooser(
     const ViewHostMsg_RunFileChooser_Params& params) {
   if (file_select_helper_.get() == NULL)
     file_select_helper_.reset(new FileSelectHelper(profile()));
   file_select_helper_->RunFileChooser(render_view_host_,
                                       GetAssociatedTabContents(), params);
 }