ES6 symbols: Allow symbols as property names

src/arm/macro-assembler-arm.h

Index: src/arm/macro-assembler-arm.h
diff --git a/src/arm/macro-assembler-arm.h b/src/arm/macro-assembler-arm.h
index 4d469f0548ba2cf5c53ff6f3a96dee4bcbbc59af..b4192294b03320d19d10772f6441db8a87bf68ab 100644
--- a/src/arm/macro-assembler-arm.h
+++ b/src/arm/macro-assembler-arm.h
@@ -583,6 +583,10 @@ class MacroAssembler: public Assembler {
                             Register scratch,
                             Label* fail);
 
+  void IsObjectNameType(Register object,
+                        Register scratch,
+                        Label* fail);
+
 #ifdef ENABLE_DEBUGGER_SUPPORT
   // ---------------------------------------------------------------------------
   // Debugger Support
@@ -1226,9 +1230,12 @@ class MacroAssembler: public Assembler {
   void AssertNotSmi(Register object);
   void AssertSmi(Register object);
 
-  // Abort execution if argument is a string, enabled via --debug-code.
+  // Abort execution if argument is not a string, enabled via --debug-code.
   void AssertString(Register object);
 
+  // Abort execution if argument is not a name, enabled via --debug-code.
+  void AssertName(Register object);
+
   // Abort execution if argument is not the root value with the given index,
   // enabled via --debug-code.
   void AssertRootValue(Register src,