Update mojo sdk to rev 91d94d6993c9b0c4135a95687a7d541ce90629b

mojo/public/cpp/environment/lib/environment.cc

Index: mojo/public/cpp/environment/lib/environment.cc
diff --git a/mojo/public/cpp/environment/lib/environment.cc b/mojo/public/cpp/environment/lib/environment.cc
index 92f31ed345ee628222d280634d88f49eacb8d655..6fb7e22a2204ef57185897050d743391b5a1684a 100644
--- a/mojo/public/cpp/environment/lib/environment.cc
+++ b/mojo/public/cpp/environment/lib/environment.cc
@@ -61,4 +61,20 @@ const MojoLogger* Environment::GetDefaultLogger() {
   return g_default_logger;
 }
 
+// static
+void Environment::InstantiateDefaultRunLoop() {
+  assert(!RunLoop::current());
+  // Not leaked: accessible from |RunLoop::current()|.
+  RunLoop* run_loop = new RunLoop();
+  MOJO_ALLOW_UNUSED_LOCAL(run_loop);
+  assert(run_loop == RunLoop::current());
+}
+
+// static
+void Environment::DestroyDefaultRunLoop() {
+  assert(RunLoop::current());
+  delete RunLoop::current();
+  assert(!RunLoop::current());
+}
+
 }  // namespace mojo