1 files changed, 19 insertions, 0 deletions
diff --git a/chromium/base/task/sequence_manager/sequence_manager.h b/chromium/base/task/sequence_manager/sequence_manager.h
index cd2163d7793..6e1cb0b752b 100644
--- a/chromium/base/task/sequence_manager/sequence_manager.h
+++ b/chromium/base/task/sequence_manager/sequence_manager.h
@@ -11,6 +11,7 @@
 #include "base/macros.h"
 #include "base/message_loop/message_pump_type.h"
 #include "base/message_loop/timer_slack.h"
+#include "base/sequenced_task_runner.h"
 #include "base/single_thread_task_runner.h"
 #include "base/task/sequence_manager/task_queue_impl.h"
 #include "base/task/sequence_manager/task_time_observer.h"
@@ -19,6 +20,7 @@
 namespace base {
 
 class MessagePump;
+class TaskObserver;
 
 namespace sequence_manager {
 
@@ -102,6 +104,11 @@ class BASE_EXPORT SequenceManager {
       kNone,
       kEnabled,
       kEnabledWithBacktrace,
+
+      // Logs high priority tasks and the lower priority tasks they skipped
+      // past.  Useful for debugging test failures caused by scheduler policy
+      // changes.
+      kReorderedOnly,
     };
     TaskLogging task_execution_logging = TaskLogging::kNone;
 
@@ -141,6 +148,10 @@ class BASE_EXPORT SequenceManager {
   // performs this initialization automatically.
   virtual void BindToCurrentThread() = 0;
 
+  // Returns the task runner the current task was posted on. Returns null if no
+  // task is currently running. Must be called on the bound thread.
+  virtual scoped_refptr<SequencedTaskRunner> GetTaskRunnerForCurrentTask() = 0;
+
   // Finishes the initialization for a SequenceManager created via
   // CreateUnboundSequenceManagerWithPump(). Must not be called in any other
   // circumstances. The ownership of the pump is transferred to SequenceManager.
@@ -238,6 +249,14 @@ class BASE_EXPORT SequenceManager {
   virtual std::unique_ptr<NativeWorkHandle> OnNativeWorkPending(
       TaskQueue::QueuePriority priority) = 0;
 
+  // Adds an observer which reports task execution. Can only be called on the
+  // same thread that |this| is running on.
+  virtual void AddTaskObserver(TaskObserver* task_observer) = 0;
+
+  // Removes an observer which reports task execution. Can only be called on the
+  // same thread that |this| is running on.
+  virtual void RemoveTaskObserver(TaskObserver* task_observer) = 0;
+
  protected:
   virtual std::unique_ptr<internal::TaskQueueImpl> CreateTaskQueueImpl(
       const TaskQueue::Spec& spec) = 0;