Reverting sharing of descriptor arrays:

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 7d127b5e8781f6086ceaacc0c5c50ece65b8adf3..8eb97125eab14ddb0f7a12fa1a97d8341b2679bd 100644
--- a/src/arm/macro-assembler-arm.h
+++ b/src/arm/macro-assembler-arm.h
@@ -1273,15 +1273,6 @@ class MacroAssembler: public Assembler {
                                Register descriptors,
                                Register scratch);
   void EnumLength(Register dst, Register map);
-  void NumberOfOwnDescriptors(Register dst, Register map);
-
-  template<typename Field>
-  void DecodeField(Register reg) {
-    static const int shift = Field::kShift;
-    static const int mask = (Field::kMask >> shift) << kSmiTagSize;
-    mov(reg, Operand(reg, LSR, shift));
-    and_(reg, reg, Operand(mask));
-  }
 
   // Activation support.
   void EnterFrame(StackFrame::Type type);