Turn ToNumberStub into a PlatformCodeStub again.

src/code-stubs.h

Index: src/code-stubs.h
diff --git a/src/code-stubs.h b/src/code-stubs.h
index 6921883e0257a45c2a13e1564f66c4da90a0858e..06eff69c8e591597bb43501df3fca4ad8b9507ea 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -50,6 +50,7 @@ namespace internal {
   V(StringCompare)                          \
   V(StubFailureTrampoline)                  \
   V(SubString)                              \
+  V(ToNumber)                               \
   /* HydrogenCodeStubs */                   \
   V(AllocateHeapNumber)                     \
   V(ArrayNArgumentsConstructor)             \
@@ -77,7 +78,6 @@ namespace internal {
   V(StoreFastElement)                       \
   V(StringAdd)                              \
   V(ToBoolean)                              \
-  V(ToNumber)                               \
   V(TransitionElementsKind)                 \
   V(VectorKeyedLoad)                        \
   V(VectorLoad)                             \
@@ -545,15 +545,6 @@ class NopRuntimeCallHelper : public RuntimeCallHelper {
 };
 
 
-class ToNumberStub: public HydrogenCodeStub {
- public:
-  explicit ToNumberStub(Isolate* isolate) : HydrogenCodeStub(isolate) { }
-
-  DEFINE_CALL_INTERFACE_DESCRIPTOR(ToNumber);
-  DEFINE_HYDROGEN_CODE_STUB(ToNumber, HydrogenCodeStub);
-};
-
-
 class NumberToStringStub FINAL : public HydrogenCodeStub {
  public:
   explicit NumberToStringStub(Isolate* isolate) : HydrogenCodeStub(isolate) {}
@@ -2537,6 +2528,15 @@ class SubStringStub : public PlatformCodeStub {
 };
 
 
+class ToNumberStub FINAL : public PlatformCodeStub {
+ public:
+  explicit ToNumberStub(Isolate* isolate) : PlatformCodeStub(isolate) {}
+
+  DEFINE_CALL_INTERFACE_DESCRIPTOR(ToNumber);
+  DEFINE_PLATFORM_CODE_STUB(ToNumber, PlatformCodeStub);
+};
+
+
 class StringCompareStub : public PlatformCodeStub {
  public:
   explicit StringCompareStub(Isolate* isolate) : PlatformCodeStub(isolate) {}