Fixing and enhancing OrderedSimpleTaskRunner to allow 100% deterministic tests.

cc/test/ordered_simple_task_runner.cc

Index: cc/test/ordered_simple_task_runner.cc
diff --git a/cc/test/ordered_simple_task_runner.cc b/cc/test/ordered_simple_task_runner.cc
index 188ffe72b5f8adea6208635d68263b3139811000..21ec2ac24a7d4605c6aae6aa1dd25479d5449b8e 100644
--- a/cc/test/ordered_simple_task_runner.cc
+++ b/cc/test/ordered_simple_task_runner.cc
@@ -7,8 +7,6 @@
 #include <algorithm>
 #include <deque>
 
-#include "base/logging.h"
-
 namespace {
 
 bool TestPendingTaskComparator(const base::TestPendingTask& lhs,
@@ -20,8 +18,6 @@ bool TestPendingTaskComparator(const base::TestPendingTask& lhs,
 
 namespace cc {
 
-OrderedSimpleTaskRunner::OrderedSimpleTaskRunner() {}
-
 OrderedSimpleTaskRunner::~OrderedSimpleTaskRunner() {}
 
 void OrderedSimpleTaskRunner::RunPendingTasks() {
@@ -32,8 +28,18 @@ void OrderedSimpleTaskRunner::RunPendingTasks() {
   std::stable_sort(tasks_to_run.begin(),
                    tasks_to_run.end(),
                    TestPendingTaskComparator);
+
   for (std::deque<base::TestPendingTask>::iterator it = tasks_to_run.begin();
        it != tasks_to_run.end(); ++it) {
+    base::TimeTicks task_time = it->GetTimeToRun();
+    if (Now() < task_time) {
+      if (advance_now_) {
+        SetNow(task_time);
+      } else {
+        pending_tasks_.push_back(*it);
+        continue;
+      }
+    }
     it->task.Run();
   }
 }