Implement ComputedStylePropertyMap for Typed OM.

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

Index: third_party/WebKit/Source/core/css/cssom/WindowGetComputedStyle.h
diff --git a/third_party/WebKit/Source/core/css/cssom/WindowGetComputedStyle.h b/third_party/WebKit/Source/core/css/cssom/WindowGetComputedStyle.h
new file mode 100644
index 0000000000000000000000000000000000000000..166547e42af22cfc0eef0bf37349ad9562b3ab42
--- /dev/null
+++ b/third_party/WebKit/Source/core/css/cssom/WindowGetComputedStyle.h
@@ -0,0 +1,28 @@
+// Copyright 2016 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 WindowGetComputedStyle_h
+#define WindowGetComputedStyle_h
+
+#include "core/css/CSSComputedStyleDeclaration.h"
+#include "core/css/cssom/ComputedStylePropertyMap.h"
+#include "core/dom/Document.h"

[Timothy Loh, 2016/04/15 04:16:08]

do we need Document and Allocator?

[meade_UTC10, 2016/04/27 05:53:56]

We dont...copy pasta error. Fixed.

+#include "wtf/Allocator.h"
+
+namespace blink {
+
+class WindowGetComputedStyle {
+    STATIC_ONLY(WindowGetComputedStyle);
+public:
+    static StylePropertyMap* getComputedStyleMap(const DOMWindow&, Element* element, const String& pseudoElement)
+    {
+        ASSERT(element);
+        CSSComputedStyleDeclaration* computedStyleDeclaration = CSSComputedStyleDeclaration::create(element, false, pseudoElement);
+        return ComputedStylePropertyMap::create(computedStyleDeclaration);
+    }
+};
+
+} // namespace blink
+
+#endif // WindowGetComputedStyle_h