Fix code style violation in compiler/preprocessor

BUG=angle:650
TEST=no behavior change

Change-Id: Ib52f15f6471fc7897b66d11baee11216cf08158a
Reviewed-on: https://chromium-review.googlesource.com/199591
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Tested-by: Zhenyao Mo <zmo@chromium.org>
diff --git a/src/compiler/preprocessor/Macro.cpp b/src/compiler/preprocessor/Macro.cpp
index b2e3088..13cb14e 100644
--- a/src/compiler/preprocessor/Macro.cpp
+++ b/src/compiler/preprocessor/Macro.cpp
@@ -11,7 +11,7 @@
 namespace pp
 {
 
-bool Macro::equals(const Macro& other) const
+bool Macro::equals(const Macro &other) const
 {
     return (type == other.type) &&
            (name == other.name) &&