Revert r9901 to make tree green again.

src/type-info.h

Index: src/type-info.h
===================================================================
--- src/type-info.h	(revision 9901)
+++ src/type-info.h	(working copy)
@@ -64,8 +64,6 @@
   static TypeInfo Integer32() { return TypeInfo(kInteger32); }
   // We know it's a Smi.
   static TypeInfo Smi() { return TypeInfo(kSmi); }
-  // We know it's a Symbol.
-  static TypeInfo Symbol() { return TypeInfo(kSymbol); }
   // We know it's a heap number.
   static TypeInfo Double() { return TypeInfo(kDouble); }
   // We know it's a string.
@@ -139,16 +137,6 @@
     return ((type_ & kSmi) == kSmi);
   }
 
-  inline bool IsSymbol() {
-    ASSERT(type_ != kUninitialized);
-    return ((type_ & kSymbol) == kSymbol);
-  }
-
-  inline bool IsNonSymbol() {
-    ASSERT(type_ != kUninitialized);
-    return ((type_ & kSymbol) == kString);
-  }
-
   inline bool IsInteger32() {
     ASSERT(type_ != kUninitialized);
     return ((type_ & kInteger32) == kInteger32);
@@ -180,7 +168,6 @@
       case kNumber: return "Number";
       case kInteger32: return "Integer32";
       case kSmi: return "Smi";
-      case kSymbol: return "Symbol";
       case kDouble: return "Double";
       case kString: return "String";
       case kNonPrimitive: return "Object";
@@ -199,7 +186,6 @@
     kSmi = 0x17,           // 0010111
     kDouble = 0x19,        // 0011001
     kString = 0x30,        // 0110000
-    kSymbol = 0x32,        // 0110010
     kNonPrimitive = 0x40,  // 1000000
     kUninitialized = 0x7f  // 1111111
   };