Add Smi::Zero and replace all Smi::FromInt(0) calls

src/isolate.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/isolate.h"
 
 #include <stdlib.h>
 
 #include <fstream>  // NOLINT(readability/streams)
 #include <sstream>
@@ skipping 3190 matching lines @@
 }
 
 // Heap::detached_contexts tracks detached contexts as pairs
 // (number of GC since the context was detached, the context).
 void Isolate::AddDetachedContext(Handle<Context> context) {
   HandleScope scope(this);
   Handle<WeakCell> cell = factory()->NewWeakCell(context);
   Handle<FixedArray> detached_contexts = factory()->detached_contexts();
   int length = detached_contexts->length();
   detached_contexts = factory()->CopyFixedArrayAndGrow(detached_contexts, 2);
-  detached_contexts->set(length, Smi::FromInt(0));
+  detached_contexts->set(length, Smi::kZero);
   detached_contexts->set(length + 1, *cell);
   heap()->set_detached_contexts(*detached_contexts);
 }
 
 
 void Isolate::CheckDetachedContextsAfterGC() {
   HandleScope scope(this);
   Handle<FixedArray> detached_contexts = factory()->detached_contexts();
   int length = detached_contexts->length();
   if (length == 0) return;
@@ skipping 93 matching lines @@
   // Then check whether this scope intercepts.
   if ((flag & intercept_mask_)) {
     intercepted_flags_ |= flag;
     return true;
   }
   return false;
 }
 
 }  // namespace internal
 }  // namespace v8