MIPS: Disinherit PropertyCell from Cell.

src/ic/mips64/handler-compiler-mips64.cc

Index: src/ic/mips64/handler-compiler-mips64.cc
diff --git a/src/ic/mips64/handler-compiler-mips64.cc b/src/ic/mips64/handler-compiler-mips64.cc
index 4d4dfc79f01c70fdc5192471166394a349fa3b66..304d01e4f97c1dfe7373cbb667091e6e2757b9bf 100644
--- a/src/ic/mips64/handler-compiler-mips64.cc
+++ b/src/ic/mips64/handler-compiler-mips64.cc
@@ -194,11 +194,11 @@ void NamedLoadHandlerCompiler::GenerateLoadFunctionPrototype(
 void PropertyHandlerCompiler::GenerateCheckPropertyCell(
     MacroAssembler* masm, Handle<JSGlobalObject> global, Handle<Name> name,
     Register scratch, Label* miss) {
-  Handle<Cell> cell = JSGlobalObject::EnsurePropertyCell(global, name);
+  Handle<PropertyCell> cell = JSGlobalObject::EnsurePropertyCell(global, name);
   DCHECK(cell->value()->IsTheHole());
   Handle<WeakCell> weak_cell = masm->isolate()->factory()->NewWeakCell(cell);
   __ LoadWeakValue(scratch, weak_cell, miss);
-  __ ld(scratch, FieldMemOperand(scratch, Cell::kValueOffset));
+  __ ld(scratch, FieldMemOperand(scratch, PropertyCell::kValueOffset));
   __ LoadRoot(at, Heap::kTheHoleValueRootIndex);
   __ Branch(miss, ne, scratch, Operand(at));
 }