Move window.close implementation to DOMWindow

Source/core/frame/DOMWindow.cpp

Index: Source/core/frame/DOMWindow.cpp
diff --git a/Source/core/frame/DOMWindow.cpp b/Source/core/frame/DOMWindow.cpp
index ee9a4a4773ae5fcf5ea58c659767e6c503d1814a..713fb660ef29868dd7c46689b3a0527bde006a96 100644
--- a/Source/core/frame/DOMWindow.cpp
+++ b/Source/core/frame/DOMWindow.cpp
@@ -12,12 +12,18 @@
 #include "core/events/MessageEvent.h"
 #include "core/frame/Frame.h"
 #include "core/frame/FrameClient.h"
+#include "core/frame/FrameConsole.h"
 #include "core/frame/LocalDOMWindow.h"
 #include "core/frame/Location.h"
+#include "core/frame/Settings.h"
 #include "core/frame/UseCounter.h"
+#include "core/inspector/ConsoleMessageStorage.h"
 #include "core/inspector/InspectorInstrumentation.h"
 #include "core/inspector/ScriptCallStack.h"
+#include "core/loader/FrameLoaderClient.h"
 #include "core/loader/MixedContentChecker.h"
+#include "core/page/ChromeClient.h"
+#include "core/page/Page.h"
 #include "platform/weborigin/KURL.h"
 #include "platform/weborigin/SecurityOrigin.h"
 
@@ -278,6 +284,50 @@ String DOMWindow::crossDomainAccessErrorMessage(LocalDOMWindow* callingWindow)
     return message + "Protocols, domains, and ports must match.";
 }
 
+void DOMWindow::close(ExecutionContext* context)
+{
+    if (!frame() || !frame()->isMainFrame())
+        return;
+
+    Page* page = frame()->page();
+    if (!page)
+        return;
+
+    Document* activeDocument = nullptr;
+    if (context) {
+        ASSERT(isMainThread());
+        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() && frame()->client()->backForwardLength() > 1 && !allowScriptsToCloseWindows) {
+        if (activeDocument) {
+            activeDocument->domWindow()->frameConsole()->addMessage(ConsoleMessage::create(JSMessageSource, WarningMessageLevel, "Scripts may close only the windows that were opened by it."));
+        }
+        return;
+    }
+
+    if (!frame()->shouldClose())
+        return;
+
+    InspectorInstrumentation::willCloseWindow(context);
+
+    page->chromeClient().closeWindowSoon();
+
+    // So as to make window.closed return the expected result
+    // after window.close(), separately record the to-be-closed
+    // state of this window. Scripts may access window.closed
+    // before the deferred close operation has gone ahead.
+    m_windowIsClosing = true;
+}
+
 DEFINE_TRACE(DOMWindow)
 {
     visitor->trace(m_location);