content::ResourceDispatcherHostImpl changes for stale-while-revalidate

content/public/common/content_switches.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 "content/public/common/content_switches.h"
 
 namespace switches {
 
 // The number of MSAA samples for canvas2D. Requires MSAA support by GPU to
 // have an effect. 0 disables MSAA.
@@ skipping 425 matching lines @@
 
 // Enables slimming paint phase 2: http://www.chromium.org/blink/slimming-paint
 const char kEnableSlimmingPaintV2[]         = "enable-slimming-paint-v2";
 
 // On platforms that support it, enables smooth scroll animation.
 const char kEnableSmoothScrolling[]         = "enable-smooth-scrolling";
 
 // Enable spatial navigation
 const char kEnableSpatialNavigation[]       = "enable-spatial-navigation";
 
+// 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 StatsTable, logging statistics to a global named shared memory table.
 const char kEnableStatsTable[]              = "enable-stats-table";
 
 // Blocks all insecure requests from secure contexts, and prevents the user
 // from overriding that decision.
 const char kEnableStrictMixedContentChecking[] =
     "enable-strict-mixed-content-checking";
 
 // Blocks insecure usage of number of powerful features (geolocation, for
 // example) that we haven't yet deprecated for the web at large.
@@ skipping 526 matching lines @@
 const char kMemoryPressureThresholdsMb[] = "memory-pressure-thresholds-mb";
 
 // Enables the exporting of the tracing events to ETW. This is only supported on
 // Windows Vista and later.
 const char kTraceExportEventsToETW[] = "trace-export-events-to-etw";
 #endif
 
 // Don't dump stuff here, follow the same order as the header.
 
 }  // namespace switches