Add help link when Bluetooth adapter is off for WebBluetooth chooser

chrome/common/url_constants.cc

Index: chrome/common/url_constants.cc
diff --git a/chrome/common/url_constants.cc b/chrome/common/url_constants.cc
index b94d56a6974a1dec1d172df3359c0a87e6ccd28b..6d277e94aaa66da37287b31dd09fade3192d8670 100644
--- a/chrome/common/url_constants.cc
+++ b/chrome/common/url_constants.cc
@@ -782,4 +782,11 @@ const char kChooserUsbOverviewURL[] =
 const char kEolNotificationURL[] = "https://www.google.com/chromebook/older/";
 #endif
 
+const char kBluetoothAdapterOffHelpURL[] =

[Jeffrey Yasskin, 2016/09/26 23:25:07]

Also next to the other bluetooth chooser URL.

[juncai, 2016/09/28 22:45:42]

Done.

+#if defined(OS_CHROMEOS)
+    "chrome://settings/search#Bluetooth";
+#else
+    "https://support.google.com/chrome?p=bluetooth";
+#endif
+
 }  // namespace chrome