Parse JSON in Blink for CopylessPaste.

third_party/WebKit/Source/modules/document_metadata/CopylessPasteExtractor.h

 // Copyright 2017 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 CopylessPasteExtractor_h
 #define CopylessPasteExtractor_h
 
 #include "modules/ModulesExport.h"
-#include "wtf/text/WTFString.h"
+#include "public/platform/modules/document_metadata/copyless_paste.mojom-blink.h"
 
 namespace blink {
 
 class Document;
+class Element;
+class JSONArray;
+class JSONObject;
+
+using mojom::blink::Entity;
+using mojom::blink::EntityPtr;
+using mojom::blink::Values;
+using mojom::blink::WebPage;
 
 // Extract structured metadata (currently schema.org in JSON-LD) for the
 // Copyless Paste feature. The extraction must be done after the document
 // has finished parsing.
 class MODULES_EXPORT CopylessPasteExtractor final {
  public:
-  static String extract(Document&);
+  static bool extract(const Document&, mojom::blink::WebPage&);
+
+ private:
+  static bool extractMetadata(const Element&, Vector<EntityPtr>&);

[wychen, 2017/04/04 23:15:32]

Can these be non-member local functions like before?

[dproctor, 2017/04/04 23:42:22]

Done.

+  static void extractEntityFromTopLevelObject(const JSONObject&,
+                                              Vector<EntityPtr>&);
+  static void extractEntitiesFromArray(JSONArray&, Vector<EntityPtr>&);
+  static void extractTopLevelEntity(const JSONObject&, Vector<EntityPtr>&);
+  static void extractEntity(const JSONObject&, Entity&, int);
+  static bool parseRepeatedValue(JSONArray*, Values&, int);
 };
 
 }  // namespace blink
 
 #endif  // CopylessPasteExtractor_h