Cleanup StringAddFlags.

src/arm/code-stubs-arm.h

Index: src/arm/code-stubs-arm.h
diff --git a/src/arm/code-stubs-arm.h b/src/arm/code-stubs-arm.h
index ae9f3c4d23e463c92b1fa56de3788f386eb951f7..6eab8d128ee74fdfc11e45a8fbabf5db2bd1d06d 100644
--- a/src/arm/code-stubs-arm.h
+++ b/src/arm/code-stubs-arm.h
@@ -144,21 +144,6 @@ class StringHelper : public AllStatic {
 };
 
 
-// Flag that indicates how to generate code for the stub StringAddStub.
-enum StringAddFlags {
-  NO_STRING_ADD_FLAGS = 1 << 0,
-  // Omit left string check in stub (left is definitely a string).
-  NO_STRING_CHECK_LEFT_IN_STUB = 1 << 1,
-  // Omit right string check in stub (right is definitely a string).
-  NO_STRING_CHECK_RIGHT_IN_STUB = 1 << 2,
-  // Stub needs a frame before calling the runtime
-  ERECT_FRAME = 1 << 3,
-  // Omit both string checks in stub.
-  NO_STRING_CHECK_IN_STUB =
-      NO_STRING_CHECK_LEFT_IN_STUB | NO_STRING_CHECK_RIGHT_IN_STUB
-};
-
-
 class StringAddStub: public PlatformCodeStub {
  public:
   explicit StringAddStub(StringAddFlags flags) : flags_(flags) {}