[tubofan] Remove .dot output of --trace-turbo

test/unittests/compiler/control-equivalence-unittest.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/bit-vector.h"
 #include "src/compiler/control-equivalence.h"
 #include "src/compiler/graph-visualizer.h"
 #include "src/compiler/node-properties.h"
+#include "src/compiler/source-position.h"
 #include "src/zone-containers.h"
 #include "test/unittests/compiler/graph-unittest.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 #define ASSERT_EQUIVALENCE(...)                           \
   do {                                                    \
     Node* __n[] = {__VA_ARGS__};                          \
     ASSERT_TRUE(IsEquivalenceClass(arraysize(__n), __n)); \
   } while (false)
 
 class ControlEquivalenceTest : public GraphTest {
  public:
   ControlEquivalenceTest() : all_nodes_(zone()), classes_(zone()) {
     Store(graph()->start());
   }
 
  protected:
   void ComputeEquivalence(Node* node) {
     graph()->SetEnd(graph()->NewNode(common()->End(1), node));
     if (FLAG_trace_turbo) {
       OFStream os(stdout);
-      os << AsDOT(*graph());
+      SourcePositionTable table(graph());
+      os << AsJSON(*graph(), &table);
     }
     ControlEquivalence equivalence(zone(), graph());
     equivalence.Run(node);
     classes_.resize(graph()->NodeCount());
     for (Node* node : all_nodes_) {
       classes_[node->id()] = equivalence.ClassOf(node);
     }
   }
 
   bool IsEquivalenceClass(size_t length, Node** nodes) {
@@ skipping 206 matching lines @@
   ASSERT_EQUIVALENCE(t2);
   ASSERT_EQUIVALENCE(f2);
   ASSERT_EQUIVALENCE(f3);
   ASSERT_EQUIVALENCE(lp);
 }
 
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8