Removed SSRC knowledge from ViEEncoder.

webrtc/video/encoder_state_feedback.h

Index: webrtc/video/encoder_state_feedback.h
diff --git a/webrtc/video/encoder_state_feedback.h b/webrtc/video/encoder_state_feedback.h
index 57595a0a69a1055f04286f39560ab78d9bce26a8..33e3546dd043516d0da975fea7fb0cd08871b2e3 100644
--- a/webrtc/video/encoder_state_feedback.h
+++ b/webrtc/video/encoder_state_feedback.h
@@ -7,10 +7,6 @@
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
-
-// TODO(mflodman) ViEEncoder has a time check to not send key frames too often,
-// move the logic to this class.
-
 #ifndef WEBRTC_VIDEO_ENCODER_STATE_FEEDBACK_H_
 #define WEBRTC_VIDEO_ENCODER_STATE_FEEDBACK_H_
 
@@ -18,6 +14,7 @@
 
 #include "webrtc/base/criticalsection.h"
 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h"
+#include "webrtc/system_wrappers/include/clock.h"
 #include "webrtc/typedefs.h"
 
 namespace webrtc {
@@ -26,7 +23,7 @@ class ViEEncoder;
 
 class EncoderStateFeedback : public RtcpIntraFrameObserver {
  public:
-  EncoderStateFeedback();
+  explicit EncoderStateFeedback(Clock* clock);
 
   // Adds an encoder to receive feedback for a set of SSRCs.
   void Init(const std::vector<uint32_t>& ssrc, ViEEncoder* encoder);
@@ -38,9 +35,13 @@ class EncoderStateFeedback : public RtcpIntraFrameObserver {
 
  private:
   bool HasSsrc(uint32_t ssrc) EXCLUSIVE_LOCKS_REQUIRED(crit_);
+  size_t GetStreamIndex(uint32_t ssrc) EXCLUSIVE_LOCKS_REQUIRED(crit_);
+
+  Clock* const clock_;
   rtc::CriticalSection crit_;
 
   std::vector<uint32_t> ssrcs_ GUARDED_BY(crit_);
+  std::vector<int64_t> time_last_intra_request_ms_ GUARDED_BY(crit_);
   ViEEncoder* vie_encoder_ GUARDED_BY(crit_);
 };