[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/CastToStructChecker.cpp b/lib/GR/Checkers/CastToStructChecker.cpp
index 2a010b2..0bcba28 100644
--- a/lib/GR/Checkers/CastToStructChecker.cpp
+++ b/lib/GR/Checkers/CastToStructChecker.cpp
@@ -18,6 +18,7 @@
 #include "GRExprEngineInternalChecks.h"
 
 using namespace clang;
+using namespace GR;
 
 namespace {
 class CastToStructChecker 
@@ -73,6 +74,6 @@
   }
 }
 
-void clang::RegisterCastToStructChecker(GRExprEngine &Eng) {
+void GR::RegisterCastToStructChecker(GRExprEngine &Eng) {
   Eng.registerCheck(new CastToStructChecker());
 }