Remove kSwappedOutURL as it is now unused.

chrome/renderer/content_settings_observer.cc

 // Copyright (c) 2012 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 "chrome/renderer/content_settings_observer.h"
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "components/content_settings/content/common/content_settings_messages.h"
 #include "content/public/common/url_constants.h"
@@ skipping 602 matching lines @@
     return true;  // Browser UI elements should still work.
 
   if (base::EqualsASCII(protocol, content::kChromeDevToolsScheme))
     return true;  // DevTools UI elements should still work.
 
 #if defined(ENABLE_EXTENSIONS)
   if (base::EqualsASCII(protocol, extensions::kExtensionScheme))
     return true;
 #endif
 
-  // TODO(creis, fsamuel): Remove this once the concept of swapped out
-  // RenderFrames goes away.
-  if (document_url == GURL(content::kSwappedOutURL))
-    return true;
-
   // If the scheme is file:, an empty file name indicates a directory listing,
   // which requires JavaScript to function properly.
   if (base::EqualsASCII(protocol, url::kFileScheme)) {
     return document_url.SchemeIs(url::kFileScheme) &&
            document_url.ExtractFileName().empty();
   }
 
   return false;
 }