Reland of Add framerate to VideoSinkWants and ability to signal on overuse

webrtc/video/overuse_frame_detector.h

Index: webrtc/video/overuse_frame_detector.h
diff --git a/webrtc/video/overuse_frame_detector.h b/webrtc/video/overuse_frame_detector.h
index 752642b1601c6d3b2c8c1332de409dbaaa5fd8da..2fb3104d538dccc756ca9464f61a12f434b8b9d3 100644
--- a/webrtc/video/overuse_frame_detector.h
+++ b/webrtc/video/overuse_frame_detector.h
@@ -87,6 +87,7 @@ class OveruseFrameDetector {
   void CheckForOveruse();  // Protected for test purposes.
 
  private:
+  class OverdoseInjector;
   class SendProcessingUsage;
   class CheckOveruseTask;
   struct FrameTiming {
@@ -110,6 +111,9 @@ class OveruseFrameDetector {
 
   void ResetAll(int num_pixels);
 
+  static std::unique_ptr<SendProcessingUsage> CreateSendProcessingUsage(
+      const CpuOveruseOptions& options);
+
   rtc::SequencedTaskChecker task_checker_;
   // Owned by the task queue from where StartCheckForOveruse is called.
   CheckOveruseTask* check_overuse_task_;