Remove usages of Heap::NewSpaceStart and its external reference

src/mips64/macro-assembler-mips64.h

Index: src/mips64/macro-assembler-mips64.h
diff --git a/src/mips64/macro-assembler-mips64.h b/src/mips64/macro-assembler-mips64.h
index fbfa9f5db9c6a59c3182c241d58ea0f1ea9efe4b..745f5e7991630274ce88aa055c947c608a754203 100644
--- a/src/mips64/macro-assembler-mips64.h
+++ b/src/mips64/macro-assembler-mips64.h
@@ -1822,25 +1822,22 @@ const Operand& rt = Operand(zero_reg), BranchDelaySlot bd = PROTECT
   // in a0.  Assumes that any other register can be used as a scratch.
   void CheckEnumCache(Label* call_runtime);
 
-  // AllocationMemento support. Arrays may have an associated
-  // AllocationMemento object that can be checked for in order to pretransition
-  // to another type.
-  // On entry, receiver_reg should point to the array object.
-  // scratch_reg gets clobbered.
-  // If allocation info is present, jump to allocation_memento_present.
-  void TestJSArrayForAllocationMemento(
-      Register receiver_reg,
-      Register scratch_reg,
-      Label* no_memento_found,
-      Condition cond = al,
-      Label* allocation_memento_present = NULL);
+  // AllocationMemento support. Arrays may have an associated AllocationMemento
+  // object that can be checked for in order to pretransition to another type.
+  // On entry, receiver_reg should point to the array object. scratch_reg gets
+  // clobbered. If no info is present jump to no_memento_found, otherwise fall
+  // through.
+  void TestJSArrayForAllocationMemento(Register receiver_reg,
+                                       Register scratch_reg,
+                                       Label* no_memento_found);
 
   void JumpIfJSArrayHasAllocationMemento(Register receiver_reg,
                                          Register scratch_reg,
                                          Label* memento_found) {
     Label no_memento_found;
     TestJSArrayForAllocationMemento(receiver_reg, scratch_reg,
-                                    &no_memento_found, eq, memento_found);
+                                    &no_memento_found);
+    Branch(memento_found);
     bind(&no_memento_found);
   }