Fix commandline interface file under heapcheck.

The internal down-integrate script probably does not handle the
top level macros well. Moved the macro inside of the namespace
declrations to avoid down-integrate errors in the future.

Change-Id: I3790357f36b0204a2a26577805192a3a1e989df8

src/google/protobuf/compiler/command_line_interface_unittest.cc

@@ -63,13 +63,13 @@
 #include <google/protobuf/testing/googletest.h>
 #include <gtest/gtest.h>
 
+namespace google {
+namespace protobuf {
+namespace compiler {
 
 // Disable the whole test when we use tcmalloc for "draconian" heap checks, in
 // which case tcmalloc will print warnings that fail the plugin tests.
 #if !GOOGLE_PROTOBUF_HEAP_CHECK_DRACONIAN
-namespace google {
-namespace protobuf {
-namespace compiler {
 
 #if defined(_WIN32)
 #ifndef STDIN_FILENO
@@ -1800,8 +1800,8 @@ TEST_F(EncodeDecodeTest, ProtoParseError) {
 
 }  // anonymous namespace
 
+#endif  // !GOOGLE_PROTOBUF_HEAP_CHECK_DRACONIAN
+
 }  // namespace compiler
 }  // namespace protobuf
-
-#endif  // !GOOGLE_PROTOBUF_HEAP_CHECK_DRACONIAN
 }  // namespace google