Merge flush code phase into marking phase.

src/compiler.cc

Index: src/compiler.cc
diff --git a/src/compiler.cc b/src/compiler.cc
index 9f0162ea7e98b73b7e4d33db2ce762c47092f1b2..ff3cb7a8328e93a1640424bb37d9a241562bad6d 100755
--- a/src/compiler.cc
+++ b/src/compiler.cc
@@ -454,6 +454,7 @@ bool Compiler::CompileLazy(CompilationInfo* info) {
 
   // Check the function has compiled code.
   ASSERT(shared->is_compiled());
+  shared->set_code_age(0);
   return true;
 }