[turbofan] split compilation stats off from HStatistics and track high water marks

src/compiler/pipeline.h

Index: src/compiler/pipeline.h
diff --git a/src/compiler/pipeline.h b/src/compiler/pipeline.h
index 87c22a6aeba25fbc5e481a7e218efb9f4f2d6ad8..5bd0e615b86176f0d9c7bd506cd996f62561b336 100644
--- a/src/compiler/pipeline.h
+++ b/src/compiler/pipeline.h
@@ -22,6 +22,7 @@ namespace compiler {
 class Graph;
 class InstructionSequence;
 class Linkage;
+class PipelineStatistics;
 class RegisterAllocator;
 class Schedule;
 class SourcePositionTable;
@@ -61,7 +62,8 @@ class Pipeline {
   void PrintAllocator(const char* phase, const RegisterAllocator* allocator);
   void VerifyAndPrintGraph(Graph* graph, const char* phase,
                            bool untyped = false);
-  Handle<Code> GenerateCode(ZonePool* zone_pool, Linkage* linkage, Graph* graph,
+  Handle<Code> GenerateCode(PipelineStatistics* pipeline_statistics,
+                            ZonePool* zone_pool, Linkage* linkage, Graph* graph,
                             Schedule* schedule,
                             SourcePositionTable* source_positions);
 };