Implement default css for toolstrips.

chrome/browser/extensions/extension_view.cc

 // Copyright (c) 2006-2009 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/extensions/extension_view.h"
 
+#include "base/string_piece.h"
 #include "chrome/browser/renderer_host/render_view_host.h"
+#include "chrome/common/resource_bundle.h"
+#include "grit/browser_resources.h"
+#include "grit/generated_resources.h"
 
 ExtensionView::ExtensionView(const GURL& url, Profile* profile) :
     HWNDHtmlView(url, this, false), profile_(profile) {
   // TODO(mpcomplete): query this from the renderer somehow?
   set_preferred_size(gfx::Size(100, 100));
 }
 
 void ExtensionView::CreatingRenderer() {
   render_view_host()->AllowExtensionBindings();
 }
 
 WebPreferences ExtensionView::GetWebkitPrefs() {
   // TODO(mpcomplete): return some reasonable prefs.
   return WebPreferences();
 }
 
 void ExtensionView::RunJavaScriptMessage(
     const std::wstring& message,
     const std::wstring& default_prompt,
     const GURL& frame_url,
     const int flags,
     IPC::Message* reply_msg,
     bool* did_suppress_message) {
   // Automatically cancel the javascript alert (otherwise the renderer hangs
   // indefinitely).
   *did_suppress_message = true;
   render_view_host()->JavaScriptMessageBoxClosed(reply_msg, true, L"");
 }
+
+void ExtensionView::DidStartLoading(RenderViewHost* render_view_host,
+                                    int32 page_id) {
+  static const StringPiece toolstrip_css(
+      ResourceBundle::GetSharedInstance().GetRawDataResource(
+          IDR_EXTENSIONS_TOOLSTRIP_CSS));
+  render_view_host->InsertCSSInWebFrame(L"", toolstrip_css.as_string());
+}