Fix the include guard style.

Change-Id: Id25c54f4649a41de6c2c00ffdb63175fb208ce10
diff --git a/src/logging.h b/src/logging.h
index f4d60bf..2c05382 100644
--- a/src/logging.h
+++ b/src/logging.h
@@ -11,8 +11,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#ifndef SRC_LOGGING_H_
-#define SRC_LOGGING_H_
+#ifndef ART_LOGGING_H_
+#define ART_LOGGING_H_
 
 #include <cstdlib>
 #include <iostream>  // NOLINT
@@ -98,4 +98,4 @@
   DISALLOW_COPY_AND_ASSIGN(LogMessageFatal);
 };
 
-#endif  // SRC_LOGGING_H_
+#endif  // ART_LOGGING_H_
diff --git a/src/macros.h b/src/macros.h
index d75f700..39cecf2 100644
--- a/src/macros.h
+++ b/src/macros.h
@@ -11,8 +11,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#ifndef SRC_MACROS_H_
-#define SRC_MACROS_H_
+#ifndef ART_MACROS_H_
+#define ART_MACROS_H_
 
 // DISALLOW_COPY_AND_ASSIGN disallows the copy and operator= functions.
 // It goes in the private: declarations in a class.
@@ -30,4 +30,4 @@
   TypeName();                                    \
   DISALLOW_COPY_AND_ASSIGN(TypeName)
 
-#endif  // SRC_MACROS_H_
+#endif  // ART_MACROS_H_