Cherry-pick 76dc1d4. rdar://125785355

    Make WebCore::IDBSerializationContext testable
    https://bugs.webkit.org/show_bug.cgi?id=272032
    <rdar://125785355>

    Reviewed by Sihui Liu.

    Original patch by Jesse Hertz.

    * Source/WebCore/Modules/indexeddb/IDBValue.h:
    (WebCore::IDBValue::IDBValue):
    * Source/WebCore/bindings/js/IDBBindingUtilities.h:
    (WebCore::deserializeIDBValueToJSValue):
    (WebCore::callOnIDBSerializationThreadAndWait):
    - Export methods to make the code testable.

    Canonical link: https://commits.webkit.org/277032@main

Canonical link: https://commits.webkit.org/272448.900@safari-7618-branch

Source/WebCore/Modules/indexeddb/IDBValue.h

@@ -37,7 +37,7 @@ class IDBValue {
 public:
     WEBCORE_EXPORT IDBValue();
     IDBValue(const SerializedScriptValue&);
-    IDBValue(const ThreadSafeDataBuffer&);
+    WEBCORE_EXPORT IDBValue(const ThreadSafeDataBuffer&);
     IDBValue(const SerializedScriptValue&, const Vector<String>& blobURLs, const Vector<String>& blobFilePaths);
     WEBCORE_EXPORT IDBValue(const ThreadSafeDataBuffer&, Vector<String>&& blobURLs, Vector<String>&& blobFilePaths);
     IDBValue(const ThreadSafeDataBuffer&, const Vector<String>& blobURLs, const Vector<String>& blobFilePaths);

Source/WebCore/bindings/js/IDBBindingUtilities.h

@@ -57,13 +57,13 @@ IndexIDToIndexKeyMap generateIndexKeyMapForValueIsolatedCopy(JSC::JSGlobalObject
 Ref<IDBKey> scriptValueToIDBKey(JSC::JSGlobalObject&, JSC::JSValue);
 
 JSC::JSValue deserializeIDBValueToJSValue(JSC::JSGlobalObject&, const IDBValue&, Vector<std::pair<String, String>>&);
-JSC::JSValue deserializeIDBValueToJSValue(JSC::JSGlobalObject&, const IDBValue&);
+WEBCORE_EXPORT JSC::JSValue deserializeIDBValueToJSValue(JSC::JSGlobalObject&, const IDBValue&);
 JSC::JSValue toJS(JSC::JSGlobalObject*, JSDOMGlobalObject*, const IDBValue&);
 JSC::JSValue toJS(JSC::JSGlobalObject&, JSC::JSGlobalObject&, IDBKey*);
 JSC::JSValue toJS(JSC::JSGlobalObject*, JSDOMGlobalObject*, const IDBKeyData&);
 
 std::optional<JSC::JSValue> deserializeIDBValueWithKeyInjection(JSC::JSGlobalObject&, const IDBValue&, const IDBKeyData&, const std::optional<IDBKeyPath>&);
 
-void callOnIDBSerializationThreadAndWait(Function<void(JSC::JSGlobalObject&)>&&);
+WEBCORE_EXPORT void callOnIDBSerializationThreadAndWait(Function<void(JSC::JSGlobalObject&)>&&);
 
 }