tests: Format with clang-tidy (see #3632)

tests/cefclient/browser/scheme_test.h

@@ -6,15 +6,13 @@
 #define CEF_TESTS_CEFCLIENT_BROWSER_SCHEME_TEST_H_
 #pragma once
 
-namespace client {
-namespace scheme_test {
+namespace client::scheme_test {
 
 // Create and register the custom scheme handler. See
 // common/scheme_handler_common.h for registration of the custom scheme
 // name/type which must occur in all processes. Called from test_runner.cc.
 void RegisterSchemeHandlers();
 
-}  // namespace scheme_test
-}  // namespace client
+}  // namespace client::scheme_test
 
 #endif  // CEF_TESTS_CEFCLIENT_BROWSER_SCHEME_TEST_H_