Cast: Allow extension to control wifi options on windows

net/base/net_util.h

 // 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.
 
 #ifndef NET_BASE_NET_UTIL_H_
 #define NET_BASE_NET_UTIL_H_
 
 #include "build/build_config.h"
 
 #if defined(OS_WIN)
@@ skipping 480 matching lines @@
   // 802.11n, HT rates.
   WIFI_PHY_LAYER_PROTOCOL_N,
   // Unclassified mode or failure to identify.
   WIFI_PHY_LAYER_PROTOCOL_UNKNOWN
 };
 
 // Characterize the PHY mode of the currently associated access point.
 // Currently only available on OS_WIN.
 NET_EXPORT WifiPHYLayerProtocol GetWifiPHYLayerProtocol();
 
+enum WifiOptions {
+  // Disables background SSID scans.
+  WIFI_OPTIONS_DISABLE_SCAN =  1 << 0,
+  // Enables media streaming mode.
+  WIFI_OPTIONS_MEDIA_STREAMING_MODE = 1 << 1
+};
+
+class NET_EXPORT ScopedWifiOptions {
+ public:
+  ScopedWifiOptions() {}
+  virtual ~ScopedWifiOptions();
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ScopedWifiOptions);
+};
+
+// Set temporary options on all wifi interfaces.
+// |options| is an ORed bitfield of WifiOptions.
+// Options are automatically disabled when the scoped pointer
+// is freed. Currently only available on OS_WIN.
+NET_EXPORT scoped_ptr<ScopedWifiOptions> SetWifiOptions(int options);
+
 // Returns number of matching initial bits between the addresses |a1| and |a2|.
 unsigned CommonPrefixLength(const IPAddressNumber& a1,
                             const IPAddressNumber& a2);
 
 // Computes the number of leading 1-bits in |mask|.
 unsigned MaskPrefixLength(const IPAddressNumber& mask);
 
 // Differentiated Services Code Point.
 // See http://tools.ietf.org/html/rfc2474 for details.
 enum DiffServCodePoint {
@@ skipping 20 matching lines @@
   DSCP_CS5  = 40,  // Video
   DSCP_EF   = 46,  // Voice
   DSCP_CS6  = 48,  // Voice
   DSCP_CS7  = 56,  // Control messages
   DSCP_LAST = DSCP_CS7
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_NET_UTIL_H_