Remove support for generating visualizer format file for the flowgraph.

runtime/bin/main.cc

Index: runtime/bin/main.cc
===================================================================
--- runtime/bin/main.cc	(revision 13460)
+++ runtime/bin/main.cc	(working copy)
@@ -40,11 +40,6 @@
 static bool use_script_snapshot = false;
 static File* snapshot_file = NULL;
 
-
-// Global state that stores a file name for flow graph debugging output.
-// NULL if no output is generated.
-static File* flow_graph_file = NULL;
-
 // Global state that indicates whether there is a debug breakpoint.
 // This pointer points into an argv buffer and does not need to be
 // free'd.
@@ -183,14 +178,6 @@
 }
 
 
-static bool ProcessFlowGraphOption(const char* flowgraph_option) {
-  ASSERT(flowgraph_option != NULL);
-  flow_graph_file = File::Open("flowgraph.cfg", File::kWriteTruncate);
-  ASSERT(flow_graph_file != NULL);
-  return true;
-}
-
-
 static struct {
   const char* option_name;
   bool (*process)(const char* option);
@@ -206,7 +193,6 @@
   { "--break_at=", ProcessBreakpointOption },
   { "--compile_all", ProcessCompileAllOption },
   { "--debug", ProcessDebugOption },
-  { "--generate_flow_graph", ProcessFlowGraphOption },
   { "--generate_perf_events_symbols", ProcessPerfEventsOption },
   { "--generate_pprof_symbols=", ProcessPprofOption },
   { "--use_script_snapshot=", ProcessScriptSnapshotOption },
@@ -235,12 +221,6 @@
 }
 
 
-static void WriteToFlowGraphFile(const char* buffer, int64_t num_bytes) {
-  ASSERT(flow_graph_file != NULL);
-  flow_graph_file->WriteFully(buffer, num_bytes);
-}
-
-
 // Parse out the command line arguments. Returns -1 if the arguments
 // are incorrect, 0 otherwise.
 static int ParseArguments(int argc,
@@ -287,10 +267,6 @@
     Dart_InitPprofSupport();
   }
 
-  if (flow_graph_file != NULL) {
-    Dart_InitFlowGraphPrinting(&WriteToFlowGraphFile);
-  }
-
   // Get the script name.
   if (i < argc) {
     *script_name = argv[i];