[clang-tidy] Cleaning namespaces to be more consistant across checkers.

Summary:
The goal of the patch is to bring checkers in their appropriate namespace.
This path doesn't change any behavior.

Reviewers: alexfh

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D19811

llvm-svn: 268264
diff --git a/clang-tools-extra/clang-tidy/misc/NonCopyableObjects.h b/clang-tools-extra/clang-tidy/misc/NonCopyableObjects.h
index c812e50..9805f74 100644
--- a/clang-tools-extra/clang-tidy/misc/NonCopyableObjects.h
+++ b/clang-tools-extra/clang-tidy/misc/NonCopyableObjects.h
@@ -14,6 +14,7 @@
 
 namespace clang {
 namespace tidy {
+namespace misc {
 
 /// The check flags dereferences and non-pointer declarations of objects that
 /// are not meant to be passed by value, such as C FILE objects.
@@ -25,6 +26,7 @@
   void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
 };
 
+} // namespace misc
 } // namespace tidy
 } // namespace clang