[CSS Typed OM] Rearrange StylePropertyMap classes to match the new spec.

third_party/WebKit/Source/core/css/cssom/StylePropertyMap.idl

Index: third_party/WebKit/Source/core/css/cssom/StylePropertyMap.idl
diff --git a/third_party/WebKit/Source/core/css/cssom/StylePropertyMap.idl b/third_party/WebKit/Source/core/css/cssom/StylePropertyMap.idl
index 12ac4a49ee03113c14d070329bc6d2524ff7c110..d6359847986cf46f544905d5a5eabe2983dfe656 100644
--- a/third_party/WebKit/Source/core/css/cssom/StylePropertyMap.idl
+++ b/third_party/WebKit/Source/core/css/cssom/StylePropertyMap.idl
@@ -5,13 +5,8 @@
 [
     Exposed=(Window,PaintWorklet),
     RuntimeEnabled=CSSTypedOM,
-] interface StylePropertyMap {
+] interface StylePropertyMap : StylePropertyMapReadonly {
     [RaisesException] void append(DOMString property, (CSSStyleValue or sequence<CSSStyleValue> or DOMString) value);
     [RaisesException, ImplementedAs=remove] void delete(DOMString property);
-    [RaisesException] CSSStyleValue? get(DOMString property);
-    [RaisesException] sequence<CSSStyleValue> getAll(DOMString property);
-    [RaisesException] boolean has(DOMString property);
     [RaisesException] void set(DOMString property, (CSSStyleValue or sequence<CSSStyleValue> or DOMString) value);
-    iterable<DOMString, (CSSStyleValue or sequence<CSSStyleValue>)>;
-    sequence<DOMString> getProperties();
 };