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diff --git a/webrtc/video/encoder_state_feedback.h b/webrtc/video/encoder_state_feedback.h
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+++ b/webrtc/video/encoder_state_feedback.h
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+/*
+ *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  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_
+
+#include <map>
+#include <vector>
+
+#include "webrtc/base/constructormagic.h"
+#include "webrtc/base/scoped_ptr.h"
+#include "webrtc/typedefs.h"
+
+namespace webrtc {
+
+class CriticalSectionWrapper;
+class EncoderStateFeedbackObserver;
+class RtcpIntraFrameObserver;
+class ViEEncoder;
+
+class EncoderStateFeedback {
+ public:
+  friend class EncoderStateFeedbackObserver;
+
+  EncoderStateFeedback();
+  ~EncoderStateFeedback();
+
+  // Adds an encoder to receive feedback for a set of SSRCs.
+  void AddEncoder(const std::vector<uint32_t>& ssrc, ViEEncoder* encoder);
+
+  // Removes a registered ViEEncoder.
+  void RemoveEncoder(const ViEEncoder* encoder);
+
+  // Returns an observer to register at the requesting class. The observer has
+  // the same lifetime as the EncoderStateFeedback instance.
+  RtcpIntraFrameObserver* GetRtcpIntraFrameObserver();
+
+ protected:
+  // Called by EncoderStateFeedbackObserver when a new key frame is requested.
+  void OnReceivedIntraFrameRequest(uint32_t ssrc);
+  void OnReceivedSLI(uint32_t ssrc, uint8_t picture_id);
+  void OnReceivedRPSI(uint32_t ssrc, uint64_t picture_id);
+  void OnLocalSsrcChanged(uint32_t old_ssrc, uint32_t new_ssrc);
+
+ private:
+  typedef std::map<uint32_t,  ViEEncoder*> SsrcEncoderMap;
+
+  rtc::scoped_ptr<CriticalSectionWrapper> crit_;
+
+  // Instance registered at the class requesting new key frames.
+  rtc::scoped_ptr<EncoderStateFeedbackObserver> observer_;
+
+  // Maps a unique ssrc to the given encoder.
+  SsrcEncoderMap encoders_;
+
+  RTC_DISALLOW_COPY_AND_ASSIGN(EncoderStateFeedback);
+};
+
+}  // namespace webrtc
+
+#endif  // WEBRTC_VIDEO_ENCODER_STATE_FEEDBACK_H_