Allow settings dialog to be opened via the app launcher, as a packaged app.

chrome/browser/tab_contents/render_view_context_menu.cc

 // Copyright (c) 2012 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 <algorithm>
 #include <set>
 #include <utility>
 
 #include "chrome/browser/tab_contents/render_view_context_menu.h"
 
@@ skipping 483 matching lines @@
   // There is no process manager in some tests.
   if (!system->process_manager())
     return NULL;
 
   return system->process_manager()->GetExtensionForRenderViewHost(
       source_web_contents_->GetRenderViewHost());
 }
 
 void RenderViewContextMenu::AppendPlatformAppItems() {
   const Extension* platform_app = GetExtension();
-  DCHECK(platform_app);
+
+  // The RVH might be for a process sandboxed from the extension.
+  if (!platform_app)
+    return;
+
   DCHECK(platform_app->is_platform_app());
 
   bool has_selection = !params_.selection_text.empty();
 
   // Add undo/redo, cut/copy/paste etc for text fields.
   if (params_.is_editable)
     AppendEditableItems();
   else if (has_selection)
     AppendCopyItem();
 
@@ skipping 1300 matching lines @@
   source_web_contents_->GetRenderViewHost()->
       ExecuteMediaPlayerActionAtLocation(location, action);
 }
 
 void RenderViewContextMenu::PluginActionAt(
     const gfx::Point& location,
     const WebPluginAction& action) {
   source_web_contents_->GetRenderViewHost()->
       ExecutePluginActionAtLocation(location, action);
 }