Implement browser-side host resolver Mojo service.

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 e86487e6fedf51c510db59fd6b9f44a21df4c405..d9cf3540882d859f73ed30ad86ac5e8392bca0ba 100644
--- a/net/test/run_all_unittests.cc
+++ b/net/test/run_all_unittests.cc
@@ -27,6 +27,10 @@
 #include "gin/public/isolate_holder.h"
 #endif
 
+#if !defined(OS_ANDROID) && !defined(OS_IOS)
+#include "third_party/mojo/src/mojo/edk/embedder/test_embedder.h"
+#endif
+
 using net::internal::ClientSocketPoolBaseHelper;
 using net::SpdySession;
 
@@ -69,6 +73,10 @@ int main(int argc, char** argv) {
   net::ProxyResolverV8::EnsureIsolateCreated();
 #endif
 
+#if !defined(OS_ANDROID) && !defined(OS_IOS)
+  mojo::embedder::test::InitWithSimplePlatformSupport();

[jamesr, 2015/02/13 00:59:54]

you need a corresponding Shutdown() call after running the test suite

[Anand Mistry (off Chromium), 2015/02/13 02:29:08]

Unfortunately, my test starts CHECK failing after I add this and I have no idea
why:
[32965:32965:0213/130724:4171662561691:ERROR:test_embedder.cc(33)] Mojo embedder
shutdown: Leaking handle 3
[32965:32965:0213/130724:4171662561730:ERROR:test_embedder.cc(33)] Mojo embedder
shutdown: Leaking handle 4
[32965:32965:0213/130724:4171662561755:FATAL:message_pipe_dispatcher.cc(106)]
Check failed: !message_pipe_.
#0 0x0000007489ae base::debug::StackTrace::StackTrace()
#1 0x000000762182 logging::LogMessage::~LogMessage()
#2 0x0000005b6600 mojo::system::MessagePipeDispatcher::~MessagePipeDispatcher()
#3 0x0000005b6649 mojo::system::MessagePipeDispatcher::~MessagePipeDispatcher()
#4 0x00000059d73e base::RefCountedThreadSafe<>::DeleteInternal()
#5 0x00000059d705 base::DefaultRefCountedThreadSafeTraits<>::Destruct()
#6 0x00000059d6de base::RefCountedThreadSafe<>::Release()
#7 0x00000059d68c scoped_refptr<>::Release()
#8 0x00000059bded scoped_refptr<>::~scoped_refptr()
#9 0x0000005a6a2b mojo::system::HandleTable::Entry::~Entry()
#10 0x0000005a8d2c std::pair<>::~pair()
#11 0x0000005aa569 __gnu_cxx::new_allocator<>::destroy<>()
#12 0x0000005aa52b __gnu_cxx::hashtable<>::_M_delete_node()
#13 0x0000005ac11a __gnu_cxx::hashtable<>::clear()
#14 0x0000005ac059 __gnu_cxx::hashtable<>::~hashtable()
#15 0x0000005a8615 __gnu_cxx::hash_map<>::~hash_map()
#16 0x0000005a6a85 mojo::system::HandleTable::~HandleTable()
#17 0x0000005991a9 mojo::system::Core::~Core()
#18 0x0000005991e9 mojo::system::Core::~Core()
#19 0x0000005bb1e1 mojo::embedder::test::Shutdown()

None of the other Mojo uses in Chrome call Shutdown(). As a comparison, I added
this to device_unittests, extension_unittests and mojo_public_bindings_unittests
and they all check fail in exactly the same way. Looks like there's systematic
problem that everyone is getting wrong.

+#endif
+
   return base::LaunchUnitTests(
       argc, argv, base::Bind(&NetTestSuite::Run,
                              base::Unretained(&test_suite)));