Move RenderViewHost::InsertCSS to RenderFrameHost.

chrome/browser/extensions/extension_view_host.cc

 // Copyright 2013 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_view_host.h"
 
 #include "base/strings/string_piece.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/extensions/window_controller.h"
 #include "chrome/browser/file_select_helper.h"
 #include "chrome/browser/platform_util.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_dialogs.h"
 #include "chrome/common/extensions/extension_messages.h"
 #include "components/web_modal/web_contents_modal_dialog_manager.h"
 #include "content/public/browser/notification_source.h"
+#include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_view.h"
 #include "extensions/browser/extension_system.h"
 #include "extensions/browser/runtime_data.h"
 #include "grit/browser_resources.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/events/keycodes/keyboard_codes.h"
 
 using content::NativeWebKeyboardEvent;
@@ skipping 299 matching lines @@
     return;
   }
   ExtensionHost::Observe(type, source, details);
 }
 
 void ExtensionViewHost::InsertInfobarCSS() {
   static const base::StringPiece css(
       ResourceBundle::GetSharedInstance().GetRawDataResource(
       IDR_EXTENSIONS_INFOBAR_CSS));
 
-  render_view_host()->InsertCSS(base::string16(), css.as_string());
+  host_contents()->GetMainFrame()->InsertCSS(css.as_string());

[jam, 2014/03/06 21:48:48]

we're sure that doing this just for the main frame is fine? please get an
extensions owner to review this

[Avi (use Gerrit), 2014/03/06 21:53:23]

OK. FYI, though, this is exactly what happens today. This changes no behavior.

[jam, 2014/03/06 21:56:29]

ah i missed that, lgtm

 }
 
 }  // namespace extensions