Cast: Only ACK decodable frames

media/cast/framer/frame_id_map.cc

Index: media/cast/framer/frame_id_map.cc
diff --git a/media/cast/framer/frame_id_map.cc b/media/cast/framer/frame_id_map.cc
index f93fb85125cfe35ba1a36f57940920932d5bbebb..2687a4aca250c269a94341a771dcbeb70e16850b 100644
--- a/media/cast/framer/frame_id_map.cc
+++ b/media/cast/framer/frame_id_map.cc
@@ -137,6 +137,22 @@ bool FrameIdMap::NextContinuousFrame(uint32* frame_id) const {
   return false;
 }
 
+bool FrameIdMap::HaveMultipleDecodableFrames() const {
+  // Find the oldest decodable frame.
+  FrameMap::const_iterator it;
+  bool found_one = false;
+  for (it = frame_map_.begin(); it != frame_map_.end(); ++it) {
+    if (it->second->Complete() && DecodableVideoFrame(it->second.get())) {
+      if (found_one) {
+        return true;
+      } else {
+        found_one = true;
+      }
+    }
+  }
+  return false;
+}
+
 uint32 FrameIdMap::LastContinuousFrame() const {
   uint32 last_continuous_frame_id = last_released_frame_;
   uint32 next_expected_frame = last_released_frame_;