Introduce networking.cast API

tools/metrics/histograms/histograms.xml

Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index 54249c3529f538ea66145410dded21419d169d6b..87793e54b714eba4ca648498eb545637d3c9e1fe 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -90941,6 +90941,11 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <int value="1161" label="AUDIO_SETMUTE"/>
   <int value="1162" label="AUDIO_GETDEVICES"/>
   <int value="1163" label="VIRTUALKEYBOARD_RESTRICTFEATURES"/>
+  <int value="1164" label="NETWORKINGCASTPRIVATE_VERIFYDESTINATION"/>
+  <int value="1165" label="NETWORKINGCASTPRIVATE_VERIFYANDENCRYPTCREDENTIALS"/>
+  <int value="1166" label="NETWORKINGCASTPRIVATE_VERIFYANDENCRYPTDATA"/>
+  <int value="1167" label="NETWORKINGCASTPRIVATE_SETWIFITDLSENABLEDSTATE"/>
+  <int value="1168" label="NETWORKINGCASTPRIVATE_GETWIFITDLSSTATUS"/>
 </enum>
 
 <enum name="ExtensionIconState" type="int">
@@ -91366,6 +91371,7 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <int value="200" label="kClipboard"/>
   <int value="201" label="kNetworkingOnc"/>
   <int value="202" label="kVirtualKeyboard"/>
+  <int value="203" label="kNetworkingCastPrivate"/>
 </enum>
 
 <enum name="ExtensionServiceVerifyAllSuccess" type="int">