Make net use v8 through gin

net/test/run_all_unittests.cc

Index: net/test/run_all_unittests.cc
diff --git a/net/test/run_all_unittests.cc b/net/test/run_all_unittests.cc
index 9b5dad2b0f7cb4e4bd9d6768558607a024e62b74..4179fb85d25584dfab4b981462b83b174393662e 100644
--- a/net/test/run_all_unittests.cc
+++ b/net/test/run_all_unittests.cc
@@ -47,10 +47,7 @@ int main(int argc, char** argv) {
   // single-threaded.
   net::EnableSSLServerSockets();
 
-#if !defined(OS_IOS)
-  // This has to be done on the main thread.
-  net::ProxyResolverV8::RememberDefaultIsolate();
-#endif
+  net::ProxyResolverV8::CreateIsolate();
 
   return base::LaunchUnitTests(
       argc, argv, base::Bind(&NetTestSuite::Run,