[clang-tidy][NFC] Use C++17 nested namespaces in the clang-tidy folder

Fix applied by running:

run-clang-tidy.py -checks=-*,modernize-concat-nested-namespaces

Differential Revision: https://reviews.llvm.org/D141770

1 files changed, 2 insertions, 6 deletions

diff --git a/clang-tools-extra/clang-tidy/android/CloexecPipeCheck.cpp b/clang-tools-extra/clang-tidy/android/CloexecPipeCheck.cpp
index 94b9450..8aa0d8f 100644
--- a/clang-tools-extra/clang-tidy/android/CloexecPipeCheck.cpp
+++ b/clang-tools-extra/clang-tidy/android/CloexecPipeCheck.cpp
@@ -12,9 +12,7 @@
 
 using namespace clang::ast_matchers;
 
-namespace clang {
-namespace tidy {
-namespace android {
+namespace clang::tidy::android {
 
 void CloexecPipeCheck::registerMatchers(MatchFinder *Finder) {
   registerMatchersImpl(Finder,
@@ -32,6 +30,4 @@ void CloexecPipeCheck::check(const MatchFinder::MatchResult &Result) {
       ReplacementText);
 }
 
-} // namespace android
-} // namespace tidy
-} // namespace clang
+} // namespace clang::tidy::android