removing redundant calls to cleanframes

Review URL: https://webrtc-codereview.appspot.com/1318004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@3844 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/modules/video_coding/main/source/jitter_buffer.cc b/webrtc/modules/video_coding/main/source/jitter_buffer.cc
index 701f92b..849d641 100644
--- a/webrtc/modules/video_coding/main/source/jitter_buffer.cc
+++ b/webrtc/modules/video_coding/main/source/jitter_buffer.cc
@@ -512,8 +512,6 @@
 
   oldest_frame->SetState(kStateDecoding);
 
-  CleanUpOldOrEmptyFrames();
-
   if (oldest_frame->FrameType() == kVideoFrameKey) {
     waiting_for_key_frame_ = false;
   }
@@ -583,8 +581,6 @@
   // Set as decoding. Propagates the missing_frame bit.
   oldest_frame->SetState(kStateDecoding);
 
-  CleanUpOldOrEmptyFrames();
-
   if (oldest_frame->FrameType() == kVideoFrameKey) {
     waiting_for_key_frame_ = false;
   }
@@ -1029,9 +1025,6 @@
   // decoder.
   oldest_frame->SetState(kStateDecoding);
 
-  // Clean up old frames and empty frames.
-  CleanUpOldOrEmptyFrames();
-
   if (oldest_frame->FrameType() == kVideoFrameKey) {
     waiting_for_key_frame_ = false;
   }
diff --git a/webrtc/modules/video_coding/main/source/jitter_buffer.h b/webrtc/modules/video_coding/main/source/jitter_buffer.h
index d8bee42..669089f 100644
--- a/webrtc/modules/video_coding/main/source/jitter_buffer.h
+++ b/webrtc/modules/video_coding/main/source/jitter_buffer.h
@@ -161,6 +161,7 @@
   // Enable/disable decoding with errors.
   void DecodeWithErrors(bool enable) {decode_with_errors_ = enable;}
   int64_t LastDecodedTimestamp() const;
+  bool decode_with_errors() const {return decode_with_errors_;}
 
  private:
   class SequenceNumberLessThan {
diff --git a/webrtc/modules/video_coding/main/source/receiver.cc b/webrtc/modules/video_coding/main/source/receiver.cc
index 6869691..f5e23f7 100644
--- a/webrtc/modules/video_coding/main/source/receiver.cc
+++ b/webrtc/modules/video_coding/main/source/receiver.cc
@@ -309,7 +309,7 @@
   // Get a complete frame if possible.
   VCMEncodedFrame* frame = jitter_buffer_.GetCompleteFrameForDecoding(0);
 
-  if (frame == NULL) {
+  if (frame == NULL && jitter_buffer_.decode_with_errors()) {
     // Get an incomplete frame.
     const bool dual_receiver_enabled_and_passive = (dual_receiver != NULL &&
         dual_receiver->State() == kPassive &&