Refresh Frame(Loader) detach() related comments.

Source/core/frame/FrameView.h

Index: Source/core/frame/FrameView.h
diff --git a/Source/core/frame/FrameView.h b/Source/core/frame/FrameView.h
index 9b00c5654a9c90b31df2849973419dbb2cbe1be8..c705ce113180eb6b9e4a7dc7a3ae4af8001f8c6a 100644
--- a/Source/core/frame/FrameView.h
+++ b/Source/core/frame/FrameView.h
@@ -724,13 +724,12 @@ private:
     HashSet<RefPtr<LayoutPart>> m_parts;
 
     // The RefPtr cycle between LocalFrame and FrameView is broken
-    // when a LocalFrame is detached by FrameLoader::detachFromParent().
+    // when a LocalFrame is detached by LocalFrame::detach().
     // It clears the LocalFrame's m_view reference via setView(nullptr).
     //
     // For Oilpan, Member reference cycles pose no problem, but
-    // LocalFrame's FrameView is also cleared by setView(). This additionally
-    // triggers FrameView::dispose(), which performs the operations
-    // that cannot be delayed until finalization time.
+    // LocalFrame's FrameView is also cleared by that setView(), so as to
+    // keep the observable lifespan of LocalFrame::view() identical.
     RefPtrWillBeMember<LocalFrame> m_frame;
 
     WebDisplayMode m_displayMode;