Fix --hydrogen-stats.

src/hydrogen.h

Index: src/hydrogen.h
diff --git a/src/hydrogen.h b/src/hydrogen.h
index 78ab571b5c52376549a07423a1dfcc2b9decd74f..98b05d147a290d67e10cbe57daae8bc2f73b02ea 100644
--- a/src/hydrogen.h
+++ b/src/hydrogen.h
@@ -1378,12 +1378,22 @@ class HStatistics: public Malloced {
     return instance.get();
   }
 
+  void IncrementSubtotals(int64_t create_graph,
+                          int64_t optimize_graph,
+                          int64_t generate_code) {
+    create_graph_ += create_graph;
+    optimize_graph_ += optimize_graph;
+    generate_code_ += generate_code;
+  }
+
  private:
   HStatistics()
       : timing_(5),
         names_(5),
         sizes_(5),
-        total_(0),
+        create_graph_(0),
+        optimize_graph_(0),
+        generate_code_(0),
         total_size_(0),
         full_code_gen_(0),
         source_size_(0) { }
@@ -1391,7 +1401,9 @@ class HStatistics: public Malloced {
   List<int64_t> timing_;
   List<const char*> names_;
   List<unsigned> sizes_;
-  int64_t total_;
+  int64_t create_graph_;
+  int64_t optimize_graph_;
+  int64_t generate_code_;
   unsigned total_size_;
   int64_t full_code_gen_;
   double source_size_;
@@ -1401,7 +1413,6 @@ class HStatistics: public Malloced {
 class HPhase BASE_EMBEDDED {
  public:
   static const char* const kFullCodeGen;
-  static const char* const kTotal;
 
   explicit HPhase(const char* name) { Begin(name, NULL, NULL, NULL); }
   HPhase(const char* name, HGraph* graph) {