stale-while-revalidate experimental implementation.

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index 47c03b11717b3de7d7f40d56b55f38e3ff70665c..34030a9617d8c6309e8fd9268516aca352867ee8 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -349,6 +349,9 @@ const char kDisableSessionCrashedBubble[] = "disable-session-crashed-bubble";
 // Disable SPDY/3.1. This is a temporary testing flag.
 const char kDisableSpdy31[]                 = "disable-spdy31";
 
+// Disables use of the Cache-Control: stale-while-revalidate directive.
+const char kDisableStaleWhileRevalidate[]   = "disable-stale-while-revalidate";
+
 // Disables the suggestions service.
 const char kDisableSuggestionsService[]     = "disable-suggestions-service";
 
@@ -600,6 +603,11 @@ const char kEnableSpellingFeedbackFieldTrial[] =
 // minimize the number of full SSL handshakes completed.
 const char kEnableSSLConnectJobWaiting[] = "enable-ssl-connect-job-waiting";
 
+// Enables implementation of the Cache-Control: stale-while-revalidate directive
+// which permits servers to allow the use of stale resources while revalidation
+// proceeds in the background.
+const char kEnableStaleWhileRevalidate[]    = "enable-stale-while-revalidate";
+
 // Enables an experimental hosted app experience.
 const char kEnableStreamlinedHostedApps[]   = "enable-streamlined-hosted-apps";