Allow extension APIs to be called from WebUI.

extensions/common/features/simple_feature.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/common/features/simple_feature.h"
 
 #include <map>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 38 matching lines @@
     extension_types["legacy_packaged_app"] = Manifest::TYPE_LEGACY_PACKAGED_APP;
     extension_types["hosted_app"] = Manifest::TYPE_HOSTED_APP;
     extension_types["platform_app"] = Manifest::TYPE_PLATFORM_APP;
     extension_types["shared_module"] = Manifest::TYPE_SHARED_MODULE;
 
     contexts["blessed_extension"] = Feature::BLESSED_EXTENSION_CONTEXT;
     contexts["unblessed_extension"] = Feature::UNBLESSED_EXTENSION_CONTEXT;
     contexts["content_script"] = Feature::CONTENT_SCRIPT_CONTEXT;
     contexts["web_page"] = Feature::WEB_PAGE_CONTEXT;
     contexts["blessed_web_page"] = Feature::BLESSED_WEB_PAGE_CONTEXT;
+    contexts["webui"] = Feature::WEBUI_CONTEXT;
 
     locations["component"] = SimpleFeature::COMPONENT_LOCATION;
     locations["policy"] = SimpleFeature::POLICY_LOCATION;
 
     platforms["chromeos"] = Feature::CHROMEOS_PLATFORM;
     platforms["linux"] = Feature::LINUX_PLATFORM;
     platforms["mac"] = Feature::MACOSX_PLATFORM;
     platforms["win"] = Feature::WIN_PLATFORM;
   }
 
@@ skipping 136 matching lines @@
     case Feature::UNBLESSED_EXTENSION_CONTEXT:
       // "iframe" is a bit of a lie/oversimplification, but that's the most
       // common unblessed context.
       return "extension iframe";
     case Feature::CONTENT_SCRIPT_CONTEXT:
       return "content script";
     case Feature::WEB_PAGE_CONTEXT:
       return "web page";
     case Feature::BLESSED_WEB_PAGE_CONTEXT:
       return "hosted app";
+    case Feature::WEBUI_CONTEXT:
+      return "webui";
   }
   NOTREACHED();
   return "";
 }
 
 // Gets a human-readable list of the display names (pluralized, comma separated
 // with the "and" in the correct place) for each of |enum_types|.
 template <typename EnumType>
 std::string ListDisplayNames(const std::vector<EnumType> enum_types) {
   std::string display_name_list;
@@ skipping 339 matching lines @@
     if (!dependency)
       return CreateAvailability(NOT_PRESENT);
     Availability dependency_availability = checker.Run(dependency);
     if (!dependency_availability.is_available())
       return dependency_availability;
   }
   return CreateAvailability(IS_AVAILABLE);
 }
 
 }  // namespace extensions