Make extensions in the extension shelf render their content to a visible GTK

chrome/browser/extensions/extension_host.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_host.h"
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "base/string_util.h"
 #include "chrome/browser/browser.h"
@@ skipping 201 matching lines @@
   url_ = params.url;
   if (!url_.SchemeIs(chrome::kExtensionScheme)) {
     extension_function_dispatcher_.reset(NULL);
     return;
   }
   extension_function_dispatcher_.reset(
       new ExtensionFunctionDispatcher(render_view_host_, this, url_));
 }
 
 void ExtensionHost::DidStopLoading(RenderViewHost* render_view_host) {
+  static const StringPiece toolstrip_css(
+      ResourceBundle::GetSharedInstance().GetRawDataResource(
+          IDR_EXTENSIONS_TOOLSTRIP_CSS));
 #if defined(TOOLKIT_VIEWS)
   ExtensionView* view = view_.get();
   if (view) {
     // TODO(erikkay) this injection should really happen in the renderer.
     // When the Jerry's view type change lands, investigate moving this there.
 
     // As a toolstrip, inject our toolstrip CSS to make it easier for toolstrips
     // to blend in with the chrome UI.
     if (view->is_toolstrip()) {
-      static const StringPiece toolstrip_css(
-          ResourceBundle::GetSharedInstance().GetRawDataResource(
-              IDR_EXTENSIONS_TOOLSTRIP_CSS));
       render_view_host->InsertCSSInWebFrame(L"", toolstrip_css.as_string());
     } else {
       // No CSS injecting currently, but call SetDidInsertCSS to tell the view
       // that it's OK to display.
       view->SetDidInsertCSS(true);
     }
   }
+#elif defined(OS_LINUX)
+  ExtensionViewGtk* view = view_.get();
+  if (view && view->is_toolstrip()) {
+    render_view_host->InsertCSSInWebFrame(L"", toolstrip_css.as_string());
+  }
 #endif
 
   did_stop_loading_ = true;
 }
 
 void ExtensionHost::DocumentAvailableInMainFrame(RenderViewHost* rvh) {
   document_element_available_ = true;
   if (is_background_page())
     extension_->SetBackgroundPageReady();
 }
@@ skipping 124 matching lines @@
   // a toolstrip or background_page onload chrome.tabs api call can make it
   // into here before the browser is sufficiently initialized to return here.
   // A similar situation may arise during shutdown.
   // TODO(rafaelw): Delay creation of background_page until the browser
   // is available. http://code.google.com/p/chromium/issues/detail?id=13284
   return browser;
 }
 
 void ExtensionHost::RenderViewCreated(RenderViewHost* render_view_host) {
 }