Reland deprecation of HAllocateObject in favor of HAllocate.

src/x64/lithium-x64.h

Index: src/x64/lithium-x64.h
diff --git a/src/x64/lithium-x64.h b/src/x64/lithium-x64.h
index b065c8ccfe6f55a79c0b140b188c91f3ca2f39f3..62f65aef41262e08f134e1c3ddc8cef5ee008b7d 100644
--- a/src/x64/lithium-x64.h
+++ b/src/x64/lithium-x64.h
@@ -50,7 +50,6 @@ class LCodeGen;
   V(AccessArgumentsAt)                          \
   V(AddI)                                       \
   V(Allocate)                                   \
-  V(AllocateObject)                             \
   V(ApplyArguments)                             \
   V(ArgumentsElements)                          \
   V(ArgumentsLength)                            \
@@ -2367,19 +2366,6 @@ class LCheckNonSmi: public LTemplateInstruction<0, 1, 0> {
 };
 
 
-class LAllocateObject: public LTemplateInstruction<1, 0, 1> {
- public:
-  explicit LAllocateObject(LOperand* temp) {
-    temps_[0] = temp;
-  }
-
-  LOperand* temp() { return temps_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(AllocateObject, "allocate-object")
-  DECLARE_HYDROGEN_ACCESSOR(AllocateObject)
-};
-
-
 class LAllocate: public LTemplateInstruction<1, 1, 1> {
  public:
   LAllocate(LOperand* size, LOperand* temp) {