Add //mojo/edk/platform/thread_utils.* containing "yield" and "sleep".

mojo/edk/system/awakable_list_unittest.cc

Index: mojo/edk/system/awakable_list_unittest.cc
diff --git a/mojo/edk/system/awakable_list_unittest.cc b/mojo/edk/system/awakable_list_unittest.cc
index c2a1fb1cdcf30f99663e9c5d6056a01524ebbfd8..d698b9bf30a686a2a6f7c6fb091d91583d3b09ae 100644
--- a/mojo/edk/system/awakable_list_unittest.cc
+++ b/mojo/edk/system/awakable_list_unittest.cc
@@ -9,13 +9,15 @@
 
 #include "mojo/edk/system/awakable_list.h"
 
+#include "mojo/edk/platform/thread_utils.h"
 #include "mojo/edk/system/handle_signals_state.h"
-#include "mojo/edk/system/test/sleep.h"
 #include "mojo/edk/system/test/timeouts.h"
 #include "mojo/edk/system/waiter.h"
 #include "mojo/edk/system/waiter_test_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+using mojo::platform::ThreadSleep;
+
 namespace mojo {
 namespace system {
 namespace {
@@ -54,7 +56,7 @@ TEST(AwakableListTest, BasicCancel) {
     test::SimpleWaiterThread thread(&result, &context);
     awakable_list.Add(thread.waiter(), MOJO_HANDLE_SIGNAL_READABLE, 3);
     thread.Start();
-    test::Sleep(2 * test::EpsilonTimeout());
+    ThreadSleep(2 * test::EpsilonTimeout());
     awakable_list.CancelAll();
   }  // Join |thread|.
   EXPECT_EQ(MOJO_RESULT_CANCELLED, result);
@@ -101,7 +103,7 @@ TEST(AwakableListTest, BasicAwakeSatisfied) {
     test::SimpleWaiterThread thread(&result, &context);
     awakable_list.Add(thread.waiter(), MOJO_HANDLE_SIGNAL_READABLE, 3);
     thread.Start();
-    test::Sleep(2 * test::EpsilonTimeout());
+    ThreadSleep(2 * test::EpsilonTimeout());
     awakable_list.AwakeForStateChange(HandleSignalsState(
         MOJO_HANDLE_SIGNAL_READABLE,
         MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE));
@@ -147,7 +149,7 @@ TEST(AwakableListTest, BasicAwakeUnsatisfiable) {
     test::SimpleWaiterThread thread(&result, &context);
     awakable_list.Add(thread.waiter(), MOJO_HANDLE_SIGNAL_READABLE, 3);
     thread.Start();
-    test::Sleep(2 * test::EpsilonTimeout());
+    ThreadSleep(2 * test::EpsilonTimeout());
     awakable_list.AwakeForStateChange(HandleSignalsState(
         MOJO_HANDLE_SIGNAL_NONE, MOJO_HANDLE_SIGNAL_WRITABLE));
     awakable_list.Remove(thread.waiter());
@@ -177,7 +179,7 @@ TEST(AwakableListTest, MultipleAwakables) {
     test::SimpleWaiterThread thread2(&result2, &context2);
     awakable_list.Add(thread2.waiter(), MOJO_HANDLE_SIGNAL_WRITABLE, 2);
     thread2.Start();
-    test::Sleep(2 * test::EpsilonTimeout());
+    ThreadSleep(2 * test::EpsilonTimeout());
     awakable_list.CancelAll();
   }  // Join threads.
   EXPECT_EQ(MOJO_RESULT_CANCELLED, result1);
@@ -194,7 +196,7 @@ TEST(AwakableListTest, MultipleAwakables) {
     test::SimpleWaiterThread thread2(&result2, &context2);
     awakable_list.Add(thread2.waiter(), MOJO_HANDLE_SIGNAL_WRITABLE, 4);
     thread2.Start();
-    test::Sleep(2 * test::EpsilonTimeout());
+    ThreadSleep(2 * test::EpsilonTimeout());
     awakable_list.AwakeForStateChange(HandleSignalsState(
         MOJO_HANDLE_SIGNAL_READABLE,
         MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE));
@@ -215,7 +217,7 @@ TEST(AwakableListTest, MultipleAwakables) {
     test::SimpleWaiterThread thread2(&result2, &context2);
     awakable_list.Add(thread2.waiter(), MOJO_HANDLE_SIGNAL_WRITABLE, 6);
     thread2.Start();
-    test::Sleep(2 * test::EpsilonTimeout());
+    ThreadSleep(2 * test::EpsilonTimeout());
     awakable_list.AwakeForStateChange(HandleSignalsState(
         MOJO_HANDLE_SIGNAL_NONE, MOJO_HANDLE_SIGNAL_READABLE));
     awakable_list.Remove(thread2.waiter());
@@ -233,7 +235,7 @@ TEST(AwakableListTest, MultipleAwakables) {
     awakable_list.Add(thread1.waiter(), MOJO_HANDLE_SIGNAL_READABLE, 7);
     thread1.Start();
 
-    test::Sleep(1 * test::EpsilonTimeout());
+    ThreadSleep(1 * test::EpsilonTimeout());
 
     // Should do nothing.
     awakable_list.AwakeForStateChange(HandleSignalsState(
@@ -244,7 +246,7 @@ TEST(AwakableListTest, MultipleAwakables) {
     awakable_list.Add(thread2.waiter(), MOJO_HANDLE_SIGNAL_WRITABLE, 8);
     thread2.Start();
 
-    test::Sleep(1 * test::EpsilonTimeout());
+    ThreadSleep(1 * test::EpsilonTimeout());
 
     // Awake #1.
     awakable_list.AwakeForStateChange(HandleSignalsState(
@@ -252,7 +254,7 @@ TEST(AwakableListTest, MultipleAwakables) {
         MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE));
     awakable_list.Remove(thread1.waiter());
 
-    test::Sleep(1 * test::EpsilonTimeout());
+    ThreadSleep(1 * test::EpsilonTimeout());
 
     test::SimpleWaiterThread thread3(&result3, &context3);
     awakable_list.Add(thread3.waiter(), MOJO_HANDLE_SIGNAL_WRITABLE, 9);
@@ -262,7 +264,7 @@ TEST(AwakableListTest, MultipleAwakables) {
     awakable_list.Add(thread4.waiter(), MOJO_HANDLE_SIGNAL_READABLE, 10);
     thread4.Start();
 
-    test::Sleep(1 * test::EpsilonTimeout());
+    ThreadSleep(1 * test::EpsilonTimeout());
 
     // Awake #2 and #3 for unsatisfiability.
     awakable_list.AwakeForStateChange(HandleSignalsState(