Fix multiple inclusion guards to match new pathnames

Change-Id: Id7735be1d75bc315733b1773fba45c1deb8ace43
diff --git a/runtime/well_known_classes.h b/runtime/well_known_classes.h
index 8170520..a8069bc 100644
--- a/runtime/well_known_classes.h
+++ b/runtime/well_known_classes.h
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-#ifndef ART_SRC_WELL_KNOWN_CLASSES_H_
-#define ART_SRC_WELL_KNOWN_CLASSES_H_
+#ifndef ART_RUNTIME_WELL_KNOWN_CLASSES_H_
+#define ART_RUNTIME_WELL_KNOWN_CLASSES_H_
 
 #include "base/mutex.h"
 #include "jni.h"
@@ -104,4 +104,4 @@
 
 }  // namespace art
 
-#endif  // ART_SRC_WELL_KNOWN_CLASSES_H_
+#endif  // ART_RUNTIME_WELL_KNOWN_CLASSES_H_