Remove swappedout: scheme since it is not used anymore.

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index 2977bc0e0a12aaf28ccf7d62a0a3a64566fae14f..48c2089b7a98afdb1b2de2acc67911f5f606910f 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -1251,11 +1251,6 @@ void RenderThreadImpl::InitializeWebKit(
 }
 
 void RenderThreadImpl::RegisterSchemes() {
-  // swappedout:
-  WebString swappedout_scheme(base::ASCIIToUTF16(kSwappedOutScheme));
-  WebSecurityPolicy::registerURLSchemeAsDisplayIsolated(swappedout_scheme);
-  WebSecurityPolicy::registerURLSchemeAsEmptyDocument(swappedout_scheme);
-
   // chrome:
   WebString chrome_scheme(base::ASCIIToUTF16(kChromeUIScheme));
   WebSecurityPolicy::registerURLSchemeAsDisplayIsolated(chrome_scheme);