Move object allocation in new space to macro assembler

src/arm/macro-assembler-arm.h

Index: src/arm/macro-assembler-arm.h
===================================================================
--- src/arm/macro-assembler-arm.h	(revision 2784)
+++ src/arm/macro-assembler-arm.h	(working copy)
@@ -188,6 +188,20 @@
 
 
   // ---------------------------------------------------------------------------
+  // Allocation support
+
+  // Allocate an object in new space. If the new space is exhausted control
+  // continues at the gc_required label. The allocated object is returned in
+  // result. If the flag tag_allocated_object is true the result is tagged as
+  // as a heap object.
+  void AllocateObjectInNewSpace(int object_size,
+                                Register result,
+                                Register scratch1,
+                                Register scratch2,
+                                Label* gc_required,
+                                bool tag_allocated_object);
+
+  // ---------------------------------------------------------------------------
   // Support functions.
 
   // Try to get function prototype of a function and puts the value in