Named all zones in the project

src/compiler/zone-stats.h

Index: src/compiler/zone-stats.h
diff --git a/src/compiler/zone-stats.h b/src/compiler/zone-stats.h
index d20a570a87dc284f5781a1feb110a9f365128076..39adca369320de4df337146464675cbdaba58fe7 100644
--- a/src/compiler/zone-stats.h
+++ b/src/compiler/zone-stats.h
@@ -20,12 +20,12 @@ class V8_EXPORT_PRIVATE ZoneStats final {
  public:
   class Scope final {
    public:
-    explicit Scope(ZoneStats* zone_stats)
-        : zone_stats_(zone_stats), zone_(nullptr) {}
+    explicit Scope(ZoneStats* zone_stats, const char* zone_name)
+        : zone_name_(zone_name), zone_stats_(zone_stats), zone_(nullptr) {}
     ~Scope() { Destroy(); }
 
     Zone* zone() {
-      if (zone_ == nullptr) zone_ = zone_stats_->NewEmptyZone();
+      if (zone_ == nullptr) zone_ = zone_stats_->NewEmptyZone(zone_name_);
       return zone_;
     }
     void Destroy() {
@@ -34,6 +34,7 @@ class V8_EXPORT_PRIVATE ZoneStats final {
     }
 
    private:
+    const char* zone_name_;
     ZoneStats* const zone_stats_;
     Zone* zone_;
     DISALLOW_COPY_AND_ASSIGN(Scope);
@@ -70,7 +71,7 @@ class V8_EXPORT_PRIVATE ZoneStats final {
   size_t GetCurrentAllocatedBytes();
 
  private:
-  Zone* NewEmptyZone();
+  Zone* NewEmptyZone(const char* zone_name);
   void ReturnZone(Zone* zone);
 
   static const size_t kMaxUnusedSize = 3;