[cronet] Add mechanism for restarting CronetEnvironment

components/grpc_support/bidirectional_stream_unittest.cc

Index: components/grpc_support/bidirectional_stream_unittest.cc
diff --git a/components/grpc_support/bidirectional_stream_unittest.cc b/components/grpc_support/bidirectional_stream_unittest.cc
index 84e5cb6c50c1ddef05c3fb9c2075bb9907b394f3..a345760f0b347b8ca94fbe4778f970ca7553214f 100644
--- a/components/grpc_support/bidirectional_stream_unittest.cc
+++ b/components/grpc_support/bidirectional_stream_unittest.cc
@@ -36,10 +36,12 @@ class BidirectionalStreamTest : public ::testing::TestWithParam<bool> {
  protected:
   void SetUp() override {
     StartQuicTestServer();
+    StartTestStreamEngine(GetQuicTestServerPort());
   }
 
   void TearDown() override {
     ShutdownQuicTestServer();
+    ShutdownTestStreamEngine();

[mef, 2017/04/26 22:19:41]

I'd move it above ShutdownQuicTestServer() to make it easier to reason about
their relative lifetimes.

[lilyhoughton, 2017/04/27 13:53:39]

Done.

   }
 
   BidirectionalStreamTest() {}