Clean up CodeObservers

runtime/bin/main.cc

Index: runtime/bin/main.cc
diff --git a/runtime/bin/main.cc b/runtime/bin/main.cc
index 11093559a3884afd84a3a50f4de64c52934dfb04..35e68e39ab61db0ea2dbaa0a49a280c8d3f5a5bc 100644
--- a/runtime/bin/main.cc
+++ b/runtime/bin/main.cc
@@ -26,10 +26,6 @@
 // it is initialized to NULL.
 extern const uint8_t* snapshot_buffer;
 
-// Global state that indicates whether pprof symbol information is
-// to be generated or not.
-static const char* generate_pprof_symbols_filename = NULL;
-
 
 // Global state that stores a pointer to the application script snapshot.
 static bool use_script_snapshot = false;
@@ -147,12 +143,6 @@ static bool ProcessDebugOption(const char* port) {
   return true;
 }
 
-static bool ProcessPprofOption(const char* filename) {
-  ASSERT(filename != NULL);
-  generate_pprof_symbols_filename = filename;
-  return true;
-}
-
 
 static bool ProcessScriptSnapshotOption(const char* filename) {
   if (filename != NULL && strlen(filename) != 0) {
@@ -179,7 +169,6 @@ static struct {
   { "--break_at=", ProcessBreakpointOption },
   { "--compile_all", ProcessCompileAllOption },
   { "--debug", ProcessDebugOption },
-  { "--generate_pprof_symbols=", ProcessPprofOption },
   { "--use_script_snapshot=", ProcessScriptSnapshotOption },
   { NULL, NULL }
 };
@@ -276,9 +265,6 @@ static int ParseArguments(int argc,
     }
   }
 
-  if (generate_pprof_symbols_filename != NULL) {
-    Dart_InitPprofSupport();
-  }
 
   // Get the script name.
   if (i < argc) {
@@ -373,25 +359,6 @@ static Dart_Handle SetupRuntimeOptions(CommandLineOptions* options,
 }
 
 
-static void DumpPprofSymbolInfo() {
-  if (generate_pprof_symbols_filename != NULL) {
-    Dart_EnterScope();
-    File* pprof_file =
-        File::Open(generate_pprof_symbols_filename, File::kWriteTruncate);
-    ASSERT(pprof_file != NULL);
-    void* buffer;
-    int buffer_size;
-    Dart_GetPprofSymbolInfo(&buffer, &buffer_size);
-    if (buffer_size > 0) {
-      ASSERT(buffer != NULL);
-      pprof_file->WriteFully(buffer, buffer_size);
-    }
-    delete pprof_file;  // Closes the file.
-    Dart_ExitScope();
-  }
-}
-
-
 #define CHECK_RESULT(result)                                                   \
   if (Dart_IsError(result)) {                                                  \
     *error = strdup(Dart_GetError(result));                                    \
@@ -749,8 +716,6 @@ int main(int argc, char** argv) {
   }
 
   Dart_ExitScope();
-  // Dump symbol information for the profiler.
-  DumpPprofSymbolInfo();
   // Shutdown the isolate.
   Dart_ShutdownIsolate();
   // Terminate process exit-code handler.