Expose synthetic delays through the GPU benchmarking extension

content/browser/tracing/tracing_controller_impl.h

Index: content/browser/tracing/tracing_controller_impl.h
diff --git a/content/browser/tracing/tracing_controller_impl.h b/content/browser/tracing/tracing_controller_impl.h
index 7eab907ce95a3b6b84d16502af39814ae0db1977..620b1dd7a62d917223e655e81e2e838e55b1d3e0 100644
--- a/content/browser/tracing/tracing_controller_impl.h
+++ b/content/browser/tracing/tracing_controller_impl.h
@@ -46,6 +46,11 @@ class TracingControllerImpl : public TracingController {
       const TracingFileResultCallback& callback) OVERRIDE;
   virtual bool GetTraceBufferPercentFull(
       const GetTraceBufferPercentFullCallback& callback) OVERRIDE;
+  virtual void ConfigureSyntheticDelay(
+      const std::string& name,
+      base::TimeDelta target_duration,
+      base::debug::TraceEventSyntheticDelay::Mode mode,
+      const ConfigureSyntheticDelayCallback& callback) OVERRIDE;
 
  private:
   typedef std::set<scoped_refptr<TraceMessageFilter> > FilterMap;
@@ -105,6 +110,8 @@ class TracingControllerImpl : public TracingController {
   void OnTraceNotification(int notification);
   void OnTraceBufferPercentFullReply(float percent_full);
 
+  void OnConfigureSyntheticDelayAcked();
+
   FilterMap filters_;
   // Pending acks for DisableRecording.
   int pending_disable_recording_ack_count_;
@@ -112,6 +119,8 @@ class TracingControllerImpl : public TracingController {
   int pending_capture_monitoring_snapshot_ack_count_;
   // Pending acks for GetTraceBufferPercentFull.
   int pending_trace_buffer_percent_full_ack_count_;
+  // Pending acks for ConfigureSyntheticDelay.
+  int pending_configure_synthetic_delay_ack_count_;
   float maximum_trace_buffer_percent_full_;
 
   bool is_recording_;
@@ -121,6 +130,7 @@ class TracingControllerImpl : public TracingController {
   TracingFileResultCallback pending_disable_recording_done_callback_;
   TracingFileResultCallback pending_capture_monitoring_snapshot_done_callback_;
   GetTraceBufferPercentFullCallback pending_trace_buffer_percent_full_callback_;
+  ConfigureSyntheticDelayCallback pending_configure_synthetic_delay_callback_;
 
   std::set<std::string> known_category_groups_;
   base::debug::CategoryFilter category_filter_;