VideoAdapter: Drop frames based on actual fps instead of expected fps

webrtc/media/base/videocapturer.h

Index: webrtc/media/base/videocapturer.h
diff --git a/webrtc/media/base/videocapturer.h b/webrtc/media/base/videocapturer.h
index edc6cd31a1b9d596042cf4b96cf7be9dc35c3e66..6a57331c5afc168218ed1510d559c08f857eced8 100644
--- a/webrtc/media/base/videocapturer.h
+++ b/webrtc/media/base/videocapturer.h
@@ -246,11 +246,6 @@ class VideoCapturer : public sigslot::has_slots<>,
 
   void SetCaptureFormat(const VideoFormat* format) {
     capture_format_.reset(format ? new VideoFormat(*format) : NULL);
-    if (capture_format_) {
-      ASSERT(capture_format_->interval > 0 &&
-             "Capture format expected to have positive interval.");
-      video_adapter_.SetExpectedInputFrameInterval(capture_format_->interval);
-    }
   }
 
   void SetSupportedFormats(const std::vector<VideoFormat>& formats);