IDL: Add build target for IDL dictionary impl generation in core

Source/core/css/FontFace.h

Index: Source/core/css/FontFace.h
diff --git a/Source/core/css/FontFace.h b/Source/core/css/FontFace.h
index 6bcda450ba75c3f5d6420a6303faf8fe97e15586..1d6fb3f5d67f73eded5123312d4604fb8e2329db 100644
--- a/Source/core/css/FontFace.h
+++ b/Source/core/css/FontFace.h
@@ -45,9 +45,9 @@ namespace blink {
 
 class CSSFontFace;
 class CSSValueList;
-class Dictionary;
 class Document;
 class ExceptionState;
+class FontFaceDescriptors;
 class FontFaceReadyPromiseResolver;
 class StylePropertySet;
 class StyleRuleFontFace;
@@ -56,9 +56,9 @@ class FontFace : public RefCountedWillBeGarbageCollectedFinalized<FontFace>, pub
 public:
     enum LoadStatus { Unloaded, Loading, Loaded, Error };
 
-    static PassRefPtrWillBeRawPtr<FontFace> create(ExecutionContext*, const AtomicString& family, PassRefPtr<ArrayBuffer> source, const Dictionary&, ExceptionState&);
-    static PassRefPtrWillBeRawPtr<FontFace> create(ExecutionContext*, const AtomicString& family, PassRefPtr<ArrayBufferView>, const Dictionary&, ExceptionState&);
-    static PassRefPtrWillBeRawPtr<FontFace> create(ExecutionContext*, const AtomicString& family, const String& source, const Dictionary&, ExceptionState&);
+    static PassRefPtrWillBeRawPtr<FontFace> create(ExecutionContext*, const AtomicString& family, PassRefPtr<ArrayBuffer> source, const FontFaceDescriptors*, ExceptionState&);
+    static PassRefPtrWillBeRawPtr<FontFace> create(ExecutionContext*, const AtomicString& family, PassRefPtr<ArrayBufferView>, const FontFaceDescriptors*, ExceptionState&);
+    static PassRefPtrWillBeRawPtr<FontFace> create(ExecutionContext*, const AtomicString& family, const String& source, const FontFaceDescriptors*, ExceptionState&);
     static PassRefPtrWillBeRawPtr<FontFace> create(Document*, const StyleRuleFontFace*);
 
     ~FontFace();