Import Reversed adapter from Chromium and use it in v8.

src/compiler/liveness-analyzer.cc

 // Copyright 2014 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/base/adapters.h"
+#include "src/compiler/js-graph.h"
 #include "src/compiler/liveness-analyzer.h"
-#include "src/compiler/js-graph.h"
 #include "src/compiler/node.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/state-values-utils.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 
 LivenessAnalyzer::LivenessAnalyzer(size_t local_count, Zone* zone)
@@ skipping 73 matching lines @@
       queued_(false),
       id_(id) {}
 
 void LivenessAnalyzerBlock::Process(BitVector* result,
                                     NonLiveFrameStateSlotReplacer* replacer) {
   queued_ = false;
 
   // Copy the bitvector to the target bit vector.
   result->CopyFrom(live_);
 
-  for (auto i = entries_.rbegin(); i != entries_.rend(); i++) {
-    auto entry = *i;
+  for (auto entry : base::Reversed(entries_)) {
     switch (entry.kind()) {
       case Entry::kLookup:
         result->Add(entry.var());
         break;
       case Entry::kBind:
         result->Remove(entry.var());
         break;
       case Entry::kCheckpoint:
         if (replacer != nullptr) {
           replacer->ClearNonLiveFrameStateSlots(entry.node(), result);
@@ skipping 79 matching lines @@
     for (int i = 0; i < live_.length(); i++) {
       os << (live_.Contains(i) ? "L" : ".");
     }
     os << std::endl;
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8