Fix include guards.

BUG=angle:733

Change-Id: I08b2c11c4831f1161c178c1842b10e807185aced
Reviewed-on: https://chromium-review.googlesource.com/230831
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>
diff --git a/src/compiler/preprocessor/Tokenizer.h b/src/compiler/preprocessor/Tokenizer.h
index 07ad93d..78eb86d 100644
--- a/src/compiler/preprocessor/Tokenizer.h
+++ b/src/compiler/preprocessor/Tokenizer.h
@@ -55,5 +55,5 @@
 };
 
 }  // namespace pp
-#endif  // COMPILER_PREPROCESSOR_TOKENIZER_H_
 
+#endif  // COMPILER_PREPROCESSOR_TOKENIZER_H_