Delete mojo::system::test::PostTaskAndWait().

mojo/edk/system/test_utils.h

Index: mojo/edk/system/test_utils.h
diff --git a/mojo/edk/system/test_utils.h b/mojo/edk/system/test_utils.h
index b8dee6685e23cb91eaf8c51619fb7094bfcd1fb2..b16c5166daa9dca2c99e1795bae9dd49342ca51d 100644
--- a/mojo/edk/system/test_utils.h
+++ b/mojo/edk/system/test_utils.h
@@ -5,28 +5,13 @@
 #ifndef MOJO_EDK_SYSTEM_TEST_UTILS_H_
 #define MOJO_EDK_SYSTEM_TEST_UTILS_H_
 
-#include "base/callback_forward.h"
 #include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "base/task_runner.h"
-#include "base/threading/thread.h"
 #include "base/time/time.h"
 
-namespace tracked_objects {
-class Location;
-}
-
 namespace mojo {
 namespace system {
 namespace test {
 
-// Posts the given task (to the given task runner) and waits for it to complete.
-// (Note: Doesn't spin the current thread's message loop, so if you're careless
-// this could easily deadlock.)
-void PostTaskAndWait(scoped_refptr<base::TaskRunner> task_runner,
-                     const tracked_objects::Location& from_here,
-                     const base::Closure& task);
-
 // A timeout smaller than |TestTimeouts::tiny_timeout()|. Warning: This may lead
 // to flakiness, but this is unavoidable if, e.g., you're trying to ensure that
 // functions with timeouts are reasonably accurate. We want this to be as small