Extensions: Listen for BROWSER_THEME_CHANGED and send updated CSS.

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/resource_bundle.h"
 #include "base/string_util.h"
 #include "chrome/browser/browser.h"
 #include "chrome/browser/browser_list.h"
@@ skipping 117 matching lines @@
     return;
   }
 
   LOG(INFO) << "Navigating to " << url_.spec();
   render_view_host_->NavigateToURL(url_);
 }
 
 void ExtensionHost::Observe(NotificationType type,
                             const NotificationSource& source,
                             const NotificationDetails& details) {
-  DCHECK(type == NotificationType::EXTENSION_BACKGROUND_PAGE_READY);
-  DCHECK(extension_->GetBackgroundPageReady());
-  NavigateToURL(url_);
+  if (type == NotificationType::EXTENSION_BACKGROUND_PAGE_READY) {
+    DCHECK(extension_->GetBackgroundPageReady());
+    NavigateToURL(url_);
+  } else if (type == NotificationType::BROWSER_THEME_CHANGED) {
+    InsertThemeCSS();
+  } else {
+    NOTREACHED();
+  }
 }
 
 void ExtensionHost::UpdatePreferredWidth(int pref_width) {
   if (view_.get())
     view_->UpdatePreferredWidth(pref_width);
 }
 
 void ExtensionHost::RenderViewGone(RenderViewHost* render_view_host) {
   LOG(INFO) << "Sending EXTENSION_PROCESS_CRASHED for " + extension_->name();
   DCHECK_EQ(render_view_host_, render_view_host);
@@ skipping 83 matching lines @@
       extension_host_type_ == ViewType::EXTENSION_MOLE) {
 #if defined(TOOLKIT_VIEWS)
     if (view_.get())
       view_->DidStopLoading();
 #endif
   }
 }
 
 void ExtensionHost::DocumentAvailableInMainFrame(RenderViewHost* rvh) {
   document_element_available_ = true;
-  if (is_background_page())
+  if (is_background_page()) {
     extension_->SetBackgroundPageReady();
-  else
+  } else {
     InsertThemeCSS();
+
+    // Listen for browser changes so we can resend the CSS.
+    registrar_.Add(this, NotificationType::BROWSER_THEME_CHANGED,
+                   NotificationService::AllSources());
+  }
 }
 
 void ExtensionHost::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).
@@ skipping 153 matching lines @@
     window_id = ExtensionTabUtil::GetWindowId(
         const_cast<ExtensionHost* >(this)->GetBrowser());
   } else if (extension_host_type_ == ViewType::EXTENSION_BACKGROUND_PAGE) {
     // Background page is not attached to any browser window, so pass -1.
     window_id = -1;
   } else {
     NOTREACHED();
   }
   return window_id;
 }