[Binding] Add [OverrideBuiltins] label onto HTMLDocument interface

third_party/WebKit/Source/bindings/core/v8/custom/V8HTMLDocumentCustom.cpp

Index: third_party/WebKit/Source/bindings/core/v8/custom/V8HTMLDocumentCustom.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/custom/V8HTMLDocumentCustom.cpp b/third_party/WebKit/Source/bindings/core/v8/custom/V8HTMLDocumentCustom.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..bc3f2d3d484625cf790af45e83488556bba38231
--- /dev/null
+++ b/third_party/WebKit/Source/bindings/core/v8/custom/V8HTMLDocumentCustom.cpp
@@ -0,0 +1,76 @@
+// 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.
+
+#include "bindings/core/v8/V8HTMLDocument.h"
+
+#include "bindings/core/v8/ToV8.h"
+#include "bindings/core/v8/V8Binding.h"
+#include "bindings/core/v8/V8StringResource.h"
+#include "core/html/DocumentNameCollection.h"
+#include "core/html/HTMLDocument.h"
+#include "core/html/HTMLIFrameElement.h"
+
+#include <cstring>
+
+namespace blink {
+
+namespace {
+
+v8::Local<v8::Value> getNamedProperty(v8::Isolate* isolate, HTMLDocument* htmlDocument, const AtomicString& key, v8::Local<v8::Object> creationContext)
+{
+    if (!htmlDocument->hasNamedItem(key) && !htmlDocument->hasExtraNamedItem(key))
+        return v8Undefined();
+    DocumentNameCollection* items = htmlDocument->documentNamedItems(key);
+    if (items->isEmpty())
+        return v8Undefined();
+
+    // https://html.spec.whatwg.org/multipage/dom.html#dom-document-namedItem-which
+    if (items->hasExactlyOneItem()) {
+        HTMLElement* element = items->item(0);
+        DCHECK(element);
+        if (isHTMLIFrameElement(*element)) {
+            Frame* frame = toHTMLIFrameElement(*element).contentFrame();
+            if (frame)
+                return toV8(frame->domWindow(), creationContext, isolate);
+        }
+        return toV8(element, creationContext, isolate);
+    }
+    return toV8(items, creationContext, isolate);
+}
+
+void propertyGetterCustom(const AtomicString& name, v8::PropertyCallbackInfo<v8::Value> const& info)
+{
+    HTMLDocument* htmlDocument = V8HTMLDocument::toImpl(info.Holder());
+    DCHECK(htmlDocument);
+
+    v8::Local<v8::Value> result = getNamedProperty(info.GetIsolate(), htmlDocument, name, info.Holder());
+    if (result.IsEmpty())
+        return;
+
+    v8SetReturnValue(info, result);
+}
+
+} // namespace
+
+void V8HTMLDocument::indexedPropertyGetterCustom(unsigned index, v8::PropertyCallbackInfo<v8::Value> const& info)
+{
+    propertyGetterCustom(AtomicString::number(index), info);
+}
+
+void V8HTMLDocument::namedPropertyGetterCustom(v8::Local<v8::Name> name, v8::PropertyCallbackInfo<v8::Value> const& info)
+{
+    v8::String::Utf8Value nameStr(name);
+
+    // [Unforgeable] attributes in an [OverrideBuiltin] interface must be looked
+    // up before any named properties
+    // (http://heycam.github.io/webidl/#dfn-named-property-visibility).
+    // So we return immediately before looking up named propertiees.
+    // TODO(peria): Support the behavior correctly.
+    if (std::strcmp(*nameStr, "location") == 0)
+        return;
+
+    propertyGetterCustom(AtomicString(*nameStr), info);
+}
+
+} // namespace blink