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

llvm-svn: 122423
diff --git a/clang/lib/GR/GRExprEngine.cpp b/clang/lib/GR/GRExprEngine.cpp
index 8743f71..d6086c7 100644
--- a/clang/lib/GR/GRExprEngine.cpp
+++ b/clang/lib/GR/GRExprEngine.cpp
@@ -37,6 +37,7 @@
 #endif
 
 using namespace clang;
+using namespace GR;
 using llvm::dyn_cast;
 using llvm::dyn_cast_or_null;
 using llvm::cast;