Re-enable ConcurrencyTest

net/base/keygen_handler_unittest.cc

Index: net/base/keygen_handler_unittest.cc
diff --git a/net/base/keygen_handler_unittest.cc b/net/base/keygen_handler_unittest.cc
index cf8319fd040b58b74596c154bd781515b6596a4a..15ec0ce7eeb18549b44735463cc7b3b8e01740d4 100644
--- a/net/base/keygen_handler_unittest.cc
+++ b/net/base/keygen_handler_unittest.cc
@@ -114,9 +114,7 @@ class ConcurrencyTestTask : public Task {
 
 // We asynchronously generate the keys so as not to hang up the IO thread. This
 // test tries to catch concurrency problems in the keygen implementation.
-//
-// Disabled because it crashes on Chrome OS. See http://crbug.com/47587
-TEST_F(KeygenHandlerTest, DISABLED_ConcurrencyTest) {
+TEST_F(KeygenHandlerTest, ConcurrencyTest) {
   const int NUM_HANDLERS = 5;
   base::WaitableEvent* events[NUM_HANDLERS] = { NULL };
   std::string results[NUM_HANDLERS];