[cast_channel] Move cast_channel related files from //extensions to //components

components/cast_channel/cast_auth_util.h

Index: components/cast_channel/cast_auth_util.h
diff --git a/extensions/browser/api/cast_channel/cast_auth_util.h b/components/cast_channel/cast_auth_util.h
similarity index 92%
rename from extensions/browser/api/cast_channel/cast_auth_util.h
rename to components/cast_channel/cast_auth_util.h
index d578c569ac69d3233fd5e6112dbc25c0c1c90233..be187738ef944bcf98189a89c5634e67912f058a 100644
--- a/extensions/browser/api/cast_channel/cast_auth_util.h
+++ b/components/cast_channel/cast_auth_util.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef EXTENSIONS_BROWSER_API_CAST_CHANNEL_CAST_AUTH_UTIL_H_
-#define EXTENSIONS_BROWSER_API_CAST_CHANNEL_CAST_AUTH_UTIL_H_
+#ifndef COMPONENTS_CAST_CHANNEL_CAST_AUTH_UTIL_H_
+#define COMPONENTS_CAST_CHANNEL_CAST_AUTH_UTIL_H_
 
 #include <string>
 
@@ -19,8 +19,6 @@ class X509Certificate;
 class TrustStore;
 }  // namespace net
 
-namespace extensions {
-namespace api {
 namespace cast_channel {
 
 class AuthResponse;
@@ -120,7 +118,5 @@ AuthResult VerifyCredentialsForTest(
     const base::Time& verification_time);
 
 }  // namespace cast_channel
-}  // namespace api
-}  // namespace extensions
 
-#endif  // EXTENSIONS_BROWSER_API_CAST_CHANNEL_CAST_AUTH_UTIL_H_
+#endif  // COMPONENTS_CAST_CHANNEL_CAST_AUTH_UTIL_H_