Introduce lock screen app context to extension features

extensions/renderer/script_context_set.cc

 // Copyright 2014 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 "extensions/renderer/script_context_set.h"
 
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "content/public/common/url_constants.h"
@@ skipping 181 matching lines @@
   //    security origin is unique yet.
   if (ScriptContext::IsSandboxedPage(url))
     return Feature::WEB_PAGE_CONTEXT;
 
   if (extension && active_extension_ids_->count(extension->id()) > 0) {
     // |extension| is active in this process, but it could be either a true
     // extension process or within the extent of a hosted app. In the latter
     // case this would usually be considered a (blessed) web page context,
     // unless the extension in question is a component extension, in which case
     // we cheat and call it blessed.
-    return (extension->is_hosted_app() &&
-            extension->location() != Manifest::COMPONENT)
-               ? Feature::BLESSED_WEB_PAGE_CONTEXT
-               : Feature::BLESSED_EXTENSION_CONTEXT;
+    if (extension->is_hosted_app() &&
+        extension->location() != Manifest::COMPONENT) {
+      return Feature::BLESSED_WEB_PAGE_CONTEXT;
+    }
+
+    return lock_screen_context_ ? Feature::LOCK_SCREEN_EXTENSION_CONTEXT
+                                : Feature::BLESSED_EXTENSION_CONTEXT;
   }
 
   // TODO(kalman): This isUnique() check is wrong, it should be performed as
   // part of ScriptContext::IsSandboxedPage().
   if (!origin.IsUnique() &&
       RendererExtensionRegistry::Get()->ExtensionBindingsAllowed(url)) {
     if (!extension)  // TODO(kalman): when does this happen?
       return Feature::UNSPECIFIED_CONTEXT;
     return extension->is_hosted_app() ? Feature::BLESSED_WEB_PAGE_CONTEXT
                                       : Feature::UNBLESSED_EXTENSION_CONTEXT;
   }
 
   if (!url.is_valid())
     return Feature::UNSPECIFIED_CONTEXT;
 
   if (url.SchemeIs(content::kChromeUIScheme))
     return Feature::WEBUI_CONTEXT;
 
   return Feature::WEB_PAGE_CONTEXT;
 }
 
 }  // namespace extensions