ShapeDetection: Eliminate DetectorType enum in ShapeDetector.cpp

third_party/WebKit/Source/modules/shapedetection/BarcodeDetector.h

 // Copyright 2016 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 BarcodeDetector_h
 #define BarcodeDetector_h
 
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "modules/ModulesExport.h"
 #include "modules/canvas2d/CanvasRenderingContext2D.h"
 #include "modules/shapedetection/ShapeDetector.h"
+#include "public/platform/modules/shapedetection/barcodedetection.mojom-blink.h"
 
 namespace blink {
 
 class LocalFrame;
 
 class MODULES_EXPORT BarcodeDetector final : public ShapeDetector,
                                              public ScriptWrappable {
   DEFINE_WRAPPERTYPEINFO();
 
  public:
   static BarcodeDetector* create(Document&);
 
   ScriptPromise detect(ScriptState*, const CanvasImageSourceUnion&);
   DECLARE_VIRTUAL_TRACE();
 
  private:
   explicit BarcodeDetector(LocalFrame&);
   ~BarcodeDetector() override = default;
+
+  void onDetectBarcodes(ScriptPromiseResolver*,
+                        Vector<mojom::blink::BarcodeDetectionResultPtr>);
+  // Error handlers for use if mojo service doesn't connect.
+  void onBarcodeServiceConnectionError();
+
+  mojom::blink::BarcodeDetectionPtr m_barcodeService;
+
+  HeapHashSet<Member<ScriptPromiseResolver>> m_barcodeServiceRequests;
 };
 
 }  // namespace blink
 
 #endif  // BarcodeDetector_h