Experimental 'purging and suspending' backgrounded tabs behind the flag

chrome/common/chrome_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 "chrome/common/chrome_switches.h"
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "build/build_config.h"
 
@@ skipping 856 matching lines @@
 const char kProxyBypassList[]               = "proxy-bypass-list";
 
 // Uses the pac script at the given URL
 const char kProxyPacUrl[]                   = "proxy-pac-url";
 
 // Uses a specified proxy server, overrides system settings. This switch only
 // affects HTTP and HTTPS requests. ARC-apps use only HTTP proxy server with the
 // highest priority.
 const char kProxyServer[]                   = "proxy-server";
 
+// Specifies the time for tab purging and suspending. When the indicated time
+// passes after a tab goes backgrounded, the backgrounded tab is purged and
+// suspended to save memory usage. The default value is "0" and purging and
+// suspending never happen.
+const char kPurgeAndSuspendTime[]           = "purge-and-suspend-time";
+
 // Specifies a comma separated list of QUIC connection options to send to
 // the server.
 const char kQuicConnectionOptions[]         = "quic-connection-options";
 
 // Specifies a comma separated list of hosts to whitelist QUIC for.
 const char kQuicHostWhitelist[]             = "quic-host-whitelist";
 
 // Specifies the maximum length for a QUIC packet.
 const char kQuicMaxPacketLength[]           = "quic-max-packet-length";
 
@@ skipping 468 matching lines @@
 
 // -----------------------------------------------------------------------------
 // DO NOT ADD YOUR CRAP TO THE BOTTOM OF THIS FILE.
 //
 // You were going to just dump your switches here, weren't you? Instead, please
 // put them in alphabetical order above, or in order inside the appropriate
 // ifdef at the bottom. The order should match the header.
 // -----------------------------------------------------------------------------
 
 }  // namespace switches