Replace ICStub for array.length with hydrogen stub

src/code-stubs.h

Index: src/code-stubs.h
diff --git a/src/code-stubs.h b/src/code-stubs.h
index 151a51ca31d03c123035dfc7a3c789b4a358eae9..9e695211eee72de38caec5edd30b52cc9bc4794b 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -47,7 +47,6 @@ namespace internal {
   V(Compare)                             \
   V(CompareIC)                           \
   V(MathPow)                             \
-  V(ArrayLength)                         \
   V(StringLength)                        \
   V(FunctionPrototype)                   \
   V(StoreArrayLength)                    \
@@ -597,16 +596,6 @@ class ICStub: public PlatformCodeStub {
 };
 
 
-class ArrayLengthStub: public ICStub {
- public:
-  explicit ArrayLengthStub(Code::Kind kind) : ICStub(kind) { }
-  virtual void Generate(MacroAssembler* masm);
-
- private:
-  virtual CodeStub::Major MajorKey() { return ArrayLength; }
-};
-
-
 class FunctionPrototypeStub: public ICStub {
  public:
   explicit FunctionPrototypeStub(Code::Kind kind) : ICStub(kind) { }