Enable Device Discovery by default on Linux, ChromeOS and Windows.

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 a6514cdf49bceb1a2919f6a41a995a190c988237..fec391eb7e6915a8cb2a8a01272ae7eddd71c496 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -320,6 +320,9 @@ const char kDisableCustomJumpList[]         = "disable-custom-jumplist";
 // automated testing.
 const char kDisableDefaultApps[]            = "disable-default-apps";
 
+// Disables device discovery.
+const char kDisableDeviceDiscovery[]        = "disable-device-discovery";
+
 // Disables retrieval of PAC URLs from DHCP as per the WPAD standard.
 const char kDisableDhcpWpad[]               = "disable-dhcp-wpad";
 
@@ -556,9 +559,6 @@ const char kEnableComponentCloudPolicy[]    = "enable-component-cloud-policy";
 // Chrome OS apps list.
 const char kEnableContacts[]                = "enable-contacts";
 
-// Enables device discovery.
-const char kEnableDeviceDiscovery[]        = "enable-device-discovery";
-
 // If true devtools experimental settings are enabled.
 const char kEnableDevToolsExperiments[]     = "enable-devtools-experiments";