Implement browser-side host resolver Mojo service.

BUG=11746

Review URL: https://codereview.chromium.org/892393005

Cr-Commit-Position: refs/heads/master@{#316160}
diff --git a/net/test/run_all_unittests.cc b/net/test/run_all_unittests.cc
index e86487e..d9cf354 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 @@
   net::ProxyResolverV8::EnsureIsolateCreated();
 #endif
 
+#if !defined(OS_ANDROID) && !defined(OS_IOS)
+  mojo::embedder::test::InitWithSimplePlatformSupport();
+#endif
+
   return base::LaunchUnitTests(
       argc, argv, base::Bind(&NetTestSuite::Run,
                              base::Unretained(&test_suite)));