Remove frame rate and target bitrate from ProtectionBitrateCalculator::SetEncodingData

These arguments are not really known when calling SetEncodingData. They are still provided as argument to ProtectionBitrateCalculator::SetTargetRates though.

This cl is broken out from https://codereview.webrtc.org/2060403002/
BUG=webrtc:5687

Review-Url: https://codereview.webrtc.org/2121983002
Cr-Commit-Position: refs/heads/master@{#13429}

webrtc/modules/video_coding/protection_bitrate_calculator.h

@@ -43,10 +43,8 @@ class ProtectionBitrateCalculator {
   void SetProtectionMethod(bool enable_fec, bool enable_nack);
 
   // Informs media optimization of initial encoding state.
-  void SetEncodingData(uint32_t estimated_bitrate_bps,
-                       uint16_t width,
-                       uint16_t height,
-                       uint32_t frame_rate,
+  void SetEncodingData(size_t width,
+                       size_t height,
                        size_t num_temporal_layers,
                        size_t max_payload_size);