Re-enable Parser::symbol_cache_ (after a long time!)

test/cctest/cctest.h

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 297 matching lines @@
 }
 
 
 // Helper function that compiles and runs the source.
 static inline v8::Local<v8::Value> CompileRun(const char* source) {
   return v8::Script::Compile(
       v8::String::NewFromUtf8(v8::Isolate::GetCurrent(), source))->Run();
 }
 
 
+static inline v8::Local<v8::Value> PreCompileCompileRun(const char* source) {
+  v8::Local<v8::String> script_source =
+      v8::String::NewFromUtf8(v8::Isolate::GetCurrent(), source);
+  v8::ScriptData* preparse = v8::ScriptData::PreCompile(script_source);
+  v8::Local<v8::Script> script =
+      v8::Script::Compile(script_source, NULL, preparse);
+  v8::Local<v8::Value> result = script->Run();
+  delete preparse;
+  return result;
+}
+
+
 // Helper function that compiles and runs the source with given origin.
 static inline v8::Local<v8::Value> CompileRunWithOrigin(const char* source,
                                                         const char* origin_url,
                                                         int line_number,
                                                         int column_number) {
   v8::Isolate* isolate = v8::Isolate::GetCurrent();
   v8::ScriptOrigin origin(v8::String::NewFromUtf8(isolate, origin_url),
                           v8::Integer::New(isolate, line_number),
                           v8::Integer::New(isolate, column_number));
   return v8::Script::Compile(v8::String::NewFromUtf8(isolate, source), &origin)
@@ skipping 43 matching lines @@
     CHECK_EQ(0, heap_profiler_->heap_object_map()->FindUntrackedObjects());
     heap_profiler_->StopHeapObjectsTracking();
   }
 
  private:
   i::HeapProfiler* heap_profiler_;
 };
 
 
 #endif  // ifndef CCTEST_H_