Move window.close implementation to DOMWindow

Source/web/RemoteFrameClientImpl.h

Index: Source/web/RemoteFrameClientImpl.h
diff --git a/Source/web/RemoteFrameClientImpl.h b/Source/web/RemoteFrameClientImpl.h
index 2889464a27a64d1b68747e4a0548e887016e87f7..6793d517583dd710d4bae97be57c861977147e33 100644
--- a/Source/web/RemoteFrameClientImpl.h
+++ b/Source/web/RemoteFrameClientImpl.h
@@ -15,23 +15,24 @@ public:
     explicit RemoteFrameClientImpl(WebRemoteFrameImpl*);
 
     // FrameClient overrides:
-    virtual bool inShadowTree() const override;
-    virtual void willBeDetached() override;
-    virtual void detached() override;
-    virtual Frame* opener() const override;
-    virtual void setOpener(Frame*) override;
-    virtual Frame* parent() const override;
-    virtual Frame* top() const override;
-    virtual Frame* previousSibling() const override;
-    virtual Frame* nextSibling() const override;
-    virtual Frame* firstChild() const override;
-    virtual Frame* lastChild() const override;
-    virtual bool willCheckAndDispatchMessageEvent(SecurityOrigin*, MessageEvent*, LocalFrame*) const override;
+    bool inShadowTree() const override;
+    void willBeDetached() override;
+    void detached() override;
+    Frame* opener() const override;
+    void setOpener(Frame*) override;
+    Frame* parent() const override;
+    Frame* top() const override;
+    Frame* previousSibling() const override;
+    Frame* nextSibling() const override;
+    Frame* firstChild() const override;
+    Frame* lastChild() const override;
+    bool willCheckAndDispatchMessageEvent(SecurityOrigin*, MessageEvent*, LocalFrame*) const override;
 
     // RemoteFrameClient overrides:
-    virtual void navigate(const ResourceRequest&, bool shouldReplaceCurrentEntry) override;
-    virtual void reload(ReloadPolicy, ClientRedirectPolicy) override;
-    virtual void forwardInputEvent(Event*) override;
+    void navigate(const ResourceRequest&, bool shouldReplaceCurrentEntry) override;
+    void reload(ReloadPolicy, ClientRedirectPolicy) override;
+    void close() override;
+    void forwardInputEvent(Event*) override;
 
     WebRemoteFrameImpl* webFrame() const { return m_webFrame; }