[clang-tidy] Cleanup namespace in utils folder.

Summary:
This is a step forward cleaning up the namespaces in clang-tidy/utils.
There is no behavior change.

Reviewers: alexfh

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D19819

llvm-svn: 268356
diff --git a/clang-tools-extra/clang-tidy/cppcoreguidelines/ProBoundsConstantArrayIndexCheck.cpp b/clang-tools-extra/clang-tidy/cppcoreguidelines/ProBoundsConstantArrayIndexCheck.cpp
index 30792e7..67e921b 100644
--- a/clang-tools-extra/clang-tidy/cppcoreguidelines/ProBoundsConstantArrayIndexCheck.cpp
+++ b/clang-tools-extra/clang-tidy/cppcoreguidelines/ProBoundsConstantArrayIndexCheck.cpp
@@ -22,7 +22,7 @@
 ProBoundsConstantArrayIndexCheck::ProBoundsConstantArrayIndexCheck(
     StringRef Name, ClangTidyContext *Context)
     : ClangTidyCheck(Name, Context), GslHeader(Options.get("GslHeader", "")),
-      IncludeStyle(IncludeSorter::parseIncludeStyle(
+      IncludeStyle(utils::IncludeSorter::parseIncludeStyle(
           Options.get("IncludeStyle", "llvm"))) {}
 
 void ProBoundsConstantArrayIndexCheck::storeOptions(
@@ -36,8 +36,8 @@
   if (!getLangOpts().CPlusPlus)
     return;
 
-  Inserter.reset(new IncludeInserter(Compiler.getSourceManager(),
-                                     Compiler.getLangOpts(), IncludeStyle));
+  Inserter.reset(new utils::IncludeInserter(
+      Compiler.getSourceManager(), Compiler.getLangOpts(), IncludeStyle));
   Compiler.getPreprocessor().addPPCallbacks(Inserter->CreatePPCallbacks());
 }