Add gyp target to build preparser as stand-alone library.

src/compiler.cc

Index: src/compiler.cc
diff --git a/src/compiler.cc b/src/compiler.cc
index e4864e48015df3ef51186b5f814920b6d5364518..a52f3c2ebe5a52f8c4a5732238deab88be9faead 100755
--- a/src/compiler.cc
+++ b/src/compiler.cc
@@ -116,26 +116,13 @@ static bool AlwaysFullCompiler() {
 static void FinishOptimization(Handle<JSFunction> function, int64_t start) {
   int opt_count = function->shared()->opt_count();
   function->shared()->set_opt_count(opt_count + 1);
+  if (!FLAG_trace_opt) return;
+
   double ms = static_cast<double>(OS::Ticks() - start) / 1000;
-  if (FLAG_trace_opt) {
-    PrintF("[optimizing: ");
-    function->PrintName();
-    PrintF(" / %" V8PRIxPTR, reinterpret_cast<intptr_t>(*function));
-    PrintF(" - took %0.3f ms]\n", ms);
-  }
-  if (FLAG_trace_opt_stats) {
-    static double compilation_time = 0.0;
-    static int compiled_functions = 0;
-    static int code_size = 0;
-
-    compilation_time += ms;
-    compiled_functions++;
-    code_size += function->shared()->SourceSize();
-    PrintF("Compiled: %d functions with %d byte source size in %fms.\n",
-           compiled_functions,
-           code_size,
-           compilation_time);
-  }
+  PrintF("[optimizing: ");
+  function->PrintName();
+  PrintF(" / %" V8PRIxPTR, reinterpret_cast<intptr_t>(*function));
+  PrintF(" - took %0.3f ms]\n", ms);
 }