Implement ComputedStylePropertyMap for Typed OM.

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

Index: third_party/WebKit/Source/core/css/cssom/StylePropertyMap.h
diff --git a/third_party/WebKit/Source/core/css/cssom/StylePropertyMap.h b/third_party/WebKit/Source/core/css/cssom/StylePropertyMap.h
index 6b3bffbad6e91e2cb6e5e3e7f2a74c367a479789..1eb606082eebef25b6091aa0faff1ebc7b9a4b12 100644
--- a/third_party/WebKit/Source/core/css/cssom/StylePropertyMap.h
+++ b/third_party/WebKit/Source/core/css/cssom/StylePropertyMap.h
@@ -20,15 +20,16 @@ class CORE_EXPORT StylePropertyMap : public GarbageCollectedFinalized<StylePrope
     WTF_MAKE_NONCOPYABLE(StylePropertyMap);
     DEFINE_WRAPPERTYPEINFO();
 public:
+    typedef HeapVector<Member<StyleValue>> StyleValueVector;
+
     virtual ~StylePropertyMap() { }
 
     // Accessors.
     StyleValue* get(const String& propertyName, ExceptionState&);
-    HeapVector<Member<StyleValue>> getAll(const String& propertyName, ExceptionState&);
+    StyleValueVector getAll(const String& propertyName, ExceptionState&);
     bool has(const String& propertyName, ExceptionState&);
 
-    virtual StyleValue* get(CSSPropertyID) = 0;
-    virtual HeapVector<Member<StyleValue>> getAll(CSSPropertyID) = 0;
+    virtual StyleValueVector getAll(CSSPropertyID) = 0;
     virtual bool has(CSSPropertyID) = 0;
 
     virtual Vector<String> getProperties() = 0;
@@ -48,6 +49,7 @@ protected:
     StylePropertyMap() { }
 
     IterationSource* startIteration(ScriptState*, ExceptionState&) override { return nullptr; }
+    StyleValueVector cssValueToStyleValueVector(CSSPropertyID, const CSSValue&);
 };
 
 } // namespace blink