Move and rename TaskTimeTracker to public interface exposed to WebThread, use in WebPerf Agent.

third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h

Index: third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h
diff --git a/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h b/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h
index 0e6a3d500605d05b30529d680fe9a5620252f060..366a3b12b06f8b2c025c86eeca4108a2255bd91a 100644
--- a/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h
+++ b/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h
@@ -8,20 +8,19 @@
 #include "base/atomicops.h"
 #include "base/macros.h"
 #include "base/synchronization/lock.h"
-#include "platform/scheduler/base/long_task_tracker.h"
 #include "platform/scheduler/base/pollable_thread_safe_flag.h"
 #include "platform/scheduler/base/queueing_time_estimator.h"
-#include "platform/scheduler/base/task_time_tracker.h"
 #include "platform/scheduler/child/idle_helper.h"
 #include "platform/scheduler/child/scheduler_helper.h"
 #include "platform/scheduler/renderer/deadline_task_runner.h"
 #include "platform/scheduler/renderer/idle_time_estimator.h"
 #include "platform/scheduler/renderer/render_widget_signals.h"
-#include "public/platform/scheduler/renderer/renderer_scheduler.h"
 #include "platform/scheduler/renderer/task_cost_estimator.h"
 #include "platform/scheduler/renderer/throttling_helper.h"
 #include "platform/scheduler/renderer/user_model.h"
 #include "platform/scheduler/renderer/web_view_scheduler_impl.h"
+#include "public/platform/scheduler/renderer/renderer_scheduler.h"
+#include "public/platform/scheduler/base/task_time_tracker.h"
 
 namespace base {
 namespace trace_event {
@@ -131,8 +130,7 @@ class BLINK_PLATFORM_EXPORT RendererSchedulerImpl
                                    const base::PendingTask& task) override;
 
   // TaskTimeTracker implementation:
-  void ReportTaskTime(base::TimeTicks start_time,
-                      base::TimeTicks end_time) override;
+  void ReportTaskTime(double start_time, double end_time) override;
 
   // QueueingTimeEstimator::Client implementation:
   void OnQueueingTimeForWindowEstimated(base::TimeDelta queueing_time) override;
@@ -149,7 +147,8 @@ class BLINK_PLATFORM_EXPORT RendererSchedulerImpl
   void AddWebViewScheduler(WebViewSchedulerImpl* web_view_scheduler);
   void RemoveWebViewScheduler(WebViewSchedulerImpl* web_view_scheduler);
 
-  LongTaskTracker::LongTaskTiming GetLongTaskTiming();
+  void AddTaskTimeTracker(TaskTimeTracker* task_time_tracker);
+  void RemoveTaskTimeTracker(TaskTimeTracker* task_time_tracker);
 
   // Test helpers.
   SchedulerHelper* GetSchedulerHelperForTesting();
@@ -369,7 +368,6 @@ class BLINK_PLATFORM_EXPORT RendererSchedulerImpl
     TaskCostEstimator loading_task_cost_estimator;
     TaskCostEstimator timer_task_cost_estimator;
     QueueingTimeEstimator queueing_time_estimator;
-    LongTaskTracker long_task_tracker;
     IdleTimeEstimator idle_time_estimator;
     UseCase current_use_case;
     Policy current_policy;