Move window.close implementation to DOMWindow

Source/core/frame/RemoteDOMWindow.cpp

Index: Source/core/frame/RemoteDOMWindow.cpp
diff --git a/Source/core/frame/RemoteDOMWindow.cpp b/Source/core/frame/RemoteDOMWindow.cpp
index 0e8ee426bcae2aa53c13c5397c4b3fdf9dc40b93..d3b0948ca9e782285a28b528e669599a37985a1f 100644
--- a/Source/core/frame/RemoteDOMWindow.cpp
+++ b/Source/core/frame/RemoteDOMWindow.cpp
@@ -9,6 +9,10 @@
 #include "core/css/CSSRuleList.h"
 #include "core/css/CSSStyleDeclaration.h"
 #include "core/css/MediaQueryList.h"
+#include "core/dom/Document.h"
+#include "core/frame/Settings.h"
+#include "core/page/Page.h"
+#include "wtf/MainThread.h"
 
 namespace blink {
 
@@ -226,9 +230,34 @@ void RemoteDOMWindow::blur()
     // FIXME: Implement.
 }
 
-void RemoteDOMWindow::close(ExecutionContext* override)
+void RemoteDOMWindow::close(ExecutionContext* context)
 {
-    // FIXME: Implement.
+    if (!frame() || !frame()->isMainFrame())
+        return;
+
+    Page* page = frame()->page();
+    if (!page)
+        return;
+
+    if (context) {
+        ASSERT(isMainThread());
+        Document* activeDocument = toDocument(context);
+        if (!activeDocument)
+            return;
+
+        if (!activeDocument->frame() || !activeDocument->frame()->canNavigate(*frame()))
+            return;
+    }
+
+    Settings* settings = frame()->settings();
+    bool allowScriptsToCloseWindows = settings && settings->allowScriptsToCloseWindows();
+
+    if (!page->openedByDOM() && !allowScriptsToCloseWindows)
+        return;

[nasko, 2015/06/11 00:04:39]

Most of the above checks are somewhat redundant between Local and Remote
DOMWindow. Should we pull at least the first few checks up to DOMWindow?

+
+    m_frame->close();
+
+    m_windowIsClosing = true;
 }
 
 void RemoteDOMWindow::print()