Load cask source with tap info

This info is used in the installer to
decide whether to report analytics.

Library/Homebrew/cask/cask_loader.rb

@@ -46,7 +46,7 @@ module Cask
       private
 
       def cask(header_token, **options, &block)
-        Cask.new(header_token, source: content, **options, config: @config, &block)
+        Cask.new(header_token, source: content, tap: tap, **options, config: @config, &block)
       end
     end
 
@@ -146,18 +146,10 @@ module Cask
         super && !Tap.from_path(ref).nil?
       end
 
-      attr_reader :tap
-
       def initialize(path)
         @tap = Tap.from_path(path)
         super(path)
       end
-
-      private
-
-      def cask(*args, &block)
-        super(*args, tap: tap, &block)
-      end
     end
 
     # Loads a cask from a specific tap.

Library/Homebrew/cask/installer.rb

@@ -566,7 +566,7 @@ module Cask
     def load_cask_from_source_api!
       options = { git_head: @cask.tap_git_head, sha256: @cask.ruby_source_checksum["sha256"] }
       cask_source = Homebrew::API::Cask.fetch_source(@cask.token, **options)
-      @cask = CaskLoader::FromContentLoader.new(cask_source).load(config: @cask.config)
+      @cask = CaskLoader::FromContentLoader.new(cask_source, tap: @cask.tap).load(config: @cask.config)
     end
   end
 end