Move compiler cctests into v8::internal::compiler namespace.

test/cctest/compiler/test-run-variables.cc

Index: test/cctest/compiler/test-run-variables.cc
diff --git a/test/cctest/compiler/test-run-variables.cc b/test/cctest/compiler/test-run-variables.cc
index e083d834a0bbcee947c199cc5faaab527a68bab0..4f587ef08553382ef48d5d8d9bd10f131c777757 100644
--- a/test/cctest/compiler/test-run-variables.cc
+++ b/test/cctest/compiler/test-run-variables.cc
@@ -7,8 +7,9 @@
 
 #include "test/cctest/compiler/function-tester.h"
 
-using namespace v8::internal;
-using namespace v8::internal::compiler;
+namespace v8 {
+namespace internal {
+namespace compiler {
 
 static const char* throws = NULL;
 
@@ -119,3 +120,7 @@ TEST(SelfReferenceVariable) {
   CompileRun("var self = 'not a function'");
   T.CheckCall(T.function);
 }
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8