Fix performance regressions due to lazy initialization.

test/cctest/cctest.cc

Index: test/cctest/cctest.cc
diff --git a/test/cctest/cctest.cc b/test/cctest/cctest.cc
index f638ed480fb0b4a7e14306e229ed71df7d9e779c..8762b101c0b533134b176e1654be3a97253ebbc0 100644
--- a/test/cctest/cctest.cc
+++ b/test/cctest/cctest.cc
@@ -28,6 +28,7 @@
 #include <v8.h>
 #include "cctest.h"
 #include "debug.h"
+#include "isolate.h"
 
 
 CcTest* CcTest::last_ = NULL;
@@ -71,6 +72,7 @@ static void PrintTestList(CcTest* current) {
 
 int main(int argc, char* argv[]) {
   v8::internal::FlagList::SetFlagsFromCommandLine(&argc, argv, true);
+  v8::internal::Isolate::GlobalSetup();
   int tests_run = 0;
   bool print_run_count = true;
   for (int i = 1; i < argc; i++) {