Move OAuth2 client id and secret switches to gaia_switches.h

google_apis/gaia/gaia_switches.h

Index: google_apis/gaia/gaia_switches.h
diff --git a/google_apis/gaia/gaia_switches.h b/google_apis/gaia/gaia_switches.h
index 0700f36c70c1022def4fde913e8d0b5a4846c5b4..4fbefa356d521b25992e7007d285709752cd4c05 100644
--- a/google_apis/gaia/gaia_switches.h
+++ b/google_apis/gaia/gaia_switches.h
@@ -28,6 +28,12 @@ extern const char kOAuth1LoginScope[];
 // Overrides OAuth wrap bridge user info scope.
 extern const char kOAuthWrapBridgeUserInfoScope[];
 
+// Specifies custom OAuth2 client id for testing purposes.
+extern const char kOAuth2ClientID[];
+
+// Specifies custom OAuth2 client secret for testing purposes.
+extern const char kOAuth2ClientSecret[];
+
 }  // namespace switches
 
 #endif  // GOOGLE_APIS_GAIA_GAIA_SWITCHES_H_