Simplify and compact transitions storage

src/json-parser.h

 // Copyright 2011 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_JSON_PARSER_H_
 #define V8_JSON_PARSER_H_
 
 #include "src/v8.h"
 
 #include "src/char-predicates-inl.h"
@@ skipping 341 matching lines @@
       Handle<Object> value;
 
       // Try to follow existing transitions as long as possible. Once we stop
       // transitioning, no transition can be found anymore.
       if (transitioning) {
         // First check whether there is a single expected transition. If so, try
         // to parse it first.
         bool follow_expected = false;
         Handle<Map> target;
         if (seq_one_byte) {
-          key = Map::ExpectedTransitionKey(map);
+          key = TransitionArray::ExpectedTransitionKey(map);
           follow_expected = !key.is_null() && ParseJsonString(key);
         }
         // If the expected transition hits, follow it.
         if (follow_expected) {
-          target = Map::ExpectedTransitionTarget(map);
+          target = TransitionArray::ExpectedTransitionTarget(map);
         } else {
           // If the expected transition failed, parse an internalized string and
           // try to find a matching transition.
           key = ParseJsonInternalizedString();
           if (key.is_null()) return ReportUnexpectedCharacter();
 
-          target = Map::FindTransitionToField(map, key);
+          target = TransitionArray::FindTransitionToField(map, key);
           // If a transition was found, follow it and continue.
           transitioning = !target.is_null();
         }
         if (c0_ != ':') return ReportUnexpectedCharacter();
 
         AdvanceSkipWhitespace();
         value = ParseJsonValue();
         if (value.is_null()) return ReportUnexpectedCharacter();
 
         if (transitioning) {
@@ skipping 422 matching lines @@
 
   DCHECK_EQ('"', c0_);
   // Advance past the last '"'.
   AdvanceSkipWhitespace();
   return result;
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_JSON_PARSER_H_