Fix cpplint whitespace/blank_line issues

Change-Id: Ice937e95e23dd622c17054551d4ae4cebd0ef8a2
diff --git a/runtime/mirror/abstract_method.h b/runtime/mirror/abstract_method.h
index d909058..bbebece 100644
--- a/runtime/mirror/abstract_method.h
+++ b/runtime/mirror/abstract_method.h
@@ -497,13 +497,9 @@
   DISALLOW_IMPLICIT_CONSTRUCTORS(AbstractMethod);
 };
 
-class MANAGED Method : public AbstractMethod {
+class MANAGED Method : public AbstractMethod {};
 
-};
-
-class MANAGED Constructor : public AbstractMethod {
-
-};
+class MANAGED Constructor : public AbstractMethod {};
 
 class MANAGED AbstractMethodClass : public Class {
  private: