[analyzer] Refactoring: Move stuff into namespace 'GR'.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122423 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/GR/Checkers/UnixAPIChecker.cpp b/lib/GR/Checkers/UnixAPIChecker.cpp
index 4f1b25f..f4c75f7 100644
--- a/lib/GR/Checkers/UnixAPIChecker.cpp
+++ b/lib/GR/Checkers/UnixAPIChecker.cpp
@@ -21,6 +21,7 @@
 #include <fcntl.h>
 
 using namespace clang;
+using namespace GR;
 using llvm::Optional;
 
 namespace {
@@ -45,7 +46,7 @@
 };
 } //end anonymous namespace
 
-void clang::RegisterUnixAPIChecker(GRExprEngine &Eng) {
+void GR::RegisterUnixAPIChecker(GRExprEngine &Eng) {
   Eng.registerCheck(new UnixAPIChecker());
 }