AppShell: Ignore channel requirements of extension API features

extensions/common/features/feature.h

 // Copyright 2013 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.
 
 #ifndef EXTENSIONS_COMMON_FEATURES_FEATURE_H_
 #define EXTENSIONS_COMMON_FEATURES_FEATURE_H_
 
 #include <set>
 #include <string>
 
@@ skipping 132 matching lines @@
   //
   // Generally try not to use this function. Even if you don't think a Feature
   // relies on an Extension now - maybe it will, one day, so if there's an
   // Extension available (or a runtime context, etc) then use the more targeted
   // method instead.
   Availability IsAvailableToEnvironment() const;
 
   virtual bool IsIdInBlacklist(const std::string& extension_id) const = 0;
   virtual bool IsIdInWhitelist(const std::string& extension_id) const = 0;
 
-  void set_check_channel(bool check_channel) { check_channel_ = check_channel; }
-
  protected:
   std::string name_;
   std::string alias_;
   std::string source_;
   bool no_parent_;
-  // TODO(devlin): Remove this once we set the feature channel for tests.
-  bool check_channel_;
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_COMMON_FEATURES_FEATURE_H_