Fix cctests using Sockets to be able to run in parallel

test/cctest/cctest.h

Index: test/cctest/cctest.h
diff --git a/test/cctest/cctest.h b/test/cctest/cctest.h
index 4e8b7324d46639420b193eec8cae48db282b579f..f3961a4adc5a4752234b58891e2f25eaa15c89c6 100644
--- a/test/cctest/cctest.h
+++ b/test/cctest/cctest.h
@@ -213,6 +213,7 @@ static inline v8::Local<v8::Value> CompileRun(const char* source) {
   return v8::Script::Compile(v8::String::New(source))->Run();
 }
 
+
 // 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,
@@ -225,4 +226,11 @@ static inline v8::Local<v8::Value> CompileRunWithOrigin(const char* source,
 }
 
 
+// Pick a slightly different port to allow tests to be run in parallel.
+static inline int FlagDependentPortOffset() {
+  return ::v8::internal::FLAG_crankshaft == false ? 100 :
+         ::v8::internal::FLAG_always_opt ? 200 : 0;
+}
+
+
 #endif  // ifndef CCTEST_H_