Cosmetic changes to tests to make it easier to concatenate them.

test/cctest/test-hydrogen-types.cc

Index: test/cctest/test-hydrogen-types.cc
diff --git a/test/cctest/test-hydrogen-types.cc b/test/cctest/test-hydrogen-types.cc
index 0ac53bde0976163bc58619684bf38e70fbd2fe93..bfb35b82072aca46f5e3c0a34cb6795aaf62960d 100644
--- a/test/cctest/test-hydrogen-types.cc
+++ b/test/cctest/test-hydrogen-types.cc
@@ -8,6 +8,7 @@
 
 using namespace v8::internal;
 
+namespace test_hydrogen_types {
 
 static const HType kTypes[] = {
   #define DECLARE_TYPE(Name, mask) HType::Name(),
@@ -166,3 +167,4 @@ TEST(HTypeNone) {
     CHECK(HType::None().IsSubtypeOf(ti));
   }
 }
+}