[runtime] Rename FieldTypeGroup to FieldOwnerGroup.

src/objects.h

 // Copyright 2015 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.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 #include <memory>
 
@@ skipping 5821 matching lines @@
     // deoptimized when the transition is replaced by a new version.
     kTransitionGroup,
     // Group of code that omit run-time prototype checks for prototypes
     // described by this map. The group is deoptimized whenever an object
     // described by this map changes shape (and transitions to a new map),
     // possibly invalidating the assumptions embedded in the code.
     kPrototypeCheckGroup,
     // Group of code that depends on global property values in property cells
     // not being changed.
     kPropertyCellChangedGroup,
-    // Group of code that omit run-time type checks for the field(s) introduced
-    // by this map.
-    kFieldTypeGroup,
+    // Group of code that omit run-time checks for field(s) introduced by
+    // this map, i.e. for the field type.
+    kFieldOwnerGroup,
     // Group of code that omit run-time type checks for initial maps of
     // constructors.
     kInitialMapChangedGroup,
     // Group of code that depends on tenuring information in AllocationSites
     // not being changed.
     kAllocationSiteTenuringChangedGroup,
     // Group of code that depends on element transition information in
     // AllocationSites not being changed.
     kAllocationSiteTransitionChangedGroup
   };
@@ skipping 5592 matching lines @@
     }
     return value;
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #endif  // V8_OBJECTS_H_