Move NumberToStringStub::GenerateLookupNumberStringCache to the MacroAssembler.

src/ia32/macro-assembler-ia32.h

Index: src/ia32/macro-assembler-ia32.h
diff --git a/src/ia32/macro-assembler-ia32.h b/src/ia32/macro-assembler-ia32.h
index adda9fe773cf571f3656f27173ebfa112fd29692..e984b2cad973f8da485cb030d89fabc95757c25e 100644
--- a/src/ia32/macro-assembler-ia32.h
+++ b/src/ia32/macro-assembler-ia32.h
@@ -897,6 +897,17 @@ class MacroAssembler: public Assembler {
   // ---------------------------------------------------------------------------
   // String utilities.
 
+  // Generate code to do a lookup in the number string cache. If the number in
+  // the register object is found in the cache the generated code falls through
+  // with the result in the result register. The object and the result register
+  // can be the same. If the number is not found in the cache the code jumps to
+  // the label not_found with only the content of register object unchanged.
+  void LookupNumberStringCache(Register object,
+                               Register result,
+                               Register scratch1,
+                               Register scratch2,
+                               Label* not_found);
+
   // Check whether the instance type represents a flat ASCII string. Jump to the
   // label if not. If the instance type can be scratched specify same register
   // for both instance type and scratch.