Keep VariantWithRecord API consistent with Variant

The `process` and `processed?` methods in Variant are private.

activestorage/app/models/active_storage/variant_with_record.rb

@@ -13,18 +13,10 @@ def initialize(blob, variation)
   end
 
   def processed
-    process
+    process unless processed?
     self
   end
 
-  def process
-    transform_blob { |image| create_or_find_record(image: image) } unless processed?
-  end
-
-  def processed?
-    record.present?
-  end
-
   def image
     record&.image
   end
@@ -37,6 +29,14 @@ def destroy
   delegate :key, :url, :download, to: :image, allow_nil: true
 
   private
+    def processed?
+      record.present?
+    end
+
+    def process
+      transform_blob { |image| create_or_find_record(image: image) }
+    end
+
     def transform_blob
       blob.open do |input|
         variation.transform(input) do |output|

activestorage/test/jobs/transform_job_test.rb

@@ -9,7 +9,7 @@ class ActiveStorage::TransformJobTest < ActiveJob::TestCase
   test "creates variant" do
     transformations = { resize_to_limit: [100, 100] }
 
-    assert_changes -> { @blob.variant(transformations).processed? }, from: false, to: true do
+    assert_changes -> { @blob.variant(transformations).send(:processed?) }, from: false, to: true do
       perform_enqueued_jobs do
         ActiveStorage::TransformJob.perform_later @blob, transformations
       end

activestorage/test/models/variant_with_record_test.rb

@@ -19,7 +19,7 @@ class ActiveStorage::VariantWithRecordTest < ActiveSupport::TestCase
     variant = blob.variant(resize_to_limit: [100, 100])
 
     assert_difference -> { blob.variant_records.count }, +1 do
-      variant.process
+      variant.processed
     end
 
     assert_match(/racecar\.jpg/, variant.url)
@@ -36,13 +36,13 @@ class ActiveStorage::VariantWithRecordTest < ActiveSupport::TestCase
     blob = create_file_blob(filename: "racecar.jpg")
 
     assert_difference -> { blob.variant_records.count } do
-      blob.variant(resize_to_limit: [100, 100]).process
+      blob.variant(resize_to_limit: [100, 100]).processed
     end
 
     variant = blob.variant(resize_to_limit: [100, 100])
 
     assert_no_difference -> { blob.variant_records.count } do
-      variant.process
+      variant.processed
     end
 
     assert_match(/racecar\.jpg/, variant.url)
@@ -54,7 +54,7 @@ class ActiveStorage::VariantWithRecordTest < ActiveSupport::TestCase
 
   test "variant of a blob is on the same service" do
     blob = create_file_blob(filename: "racecar.jpg", service_name: "local_public")
-    variant = blob.variant(resize_to_limit: [100, 100]).process
+    variant = blob.variant(resize_to_limit: [100, 100]).processed
 
     assert_equal "local_public", variant.image.blob.service_name
   end
@@ -65,12 +65,12 @@ class ActiveStorage::VariantWithRecordTest < ActiveSupport::TestCase
 
     blob1 = directly_upload_file_blob(filename: "racecar.jpg")
     assert_difference -> { ActiveStorage::VariantRecord.count }, +1 do
-      blob1.representation(resize_to_limit: [100, 100]).process
+      blob1.representation(resize_to_limit: [100, 100]).processed
     end
 
     blob2 = directly_upload_file_blob(filename: "racecar_rotated.jpg")
     assert_difference -> { ActiveStorage::VariantRecord.count }, +1 do
-      blob2.representation(resize_to_limit: [100, 100]).process
+      blob2.representation(resize_to_limit: [100, 100]).processed
     end
 
     assert_no_difference -> { ActiveStorage::VariantRecord.count } do
@@ -126,12 +126,12 @@ class ActiveStorage::VariantWithRecordTest < ActiveSupport::TestCase
 
     blob1 = directly_upload_file_blob(filename: "racecar.jpg")
     assert_difference -> { ActiveStorage::VariantRecord.count }, +1 do
-      blob1.representation(resize_to_limit: [100, 100]).process
+      blob1.representation(resize_to_limit: [100, 100]).processed
     end
 
     blob2 = directly_upload_file_blob(filename: "racecar_rotated.jpg")
     assert_difference -> { ActiveStorage::VariantRecord.count }, +1 do
-      blob2.representation(resize_to_limit: [100, 100]).process
+      blob2.representation(resize_to_limit: [100, 100]).processed
     end
 
     assert_no_difference -> { ActiveStorage::VariantRecord.count } do