diff --git a/dom/media/encoder/OmxTrackEncoder.cpp b/dom/media/encoder/OmxTrackEncoder.cpp
index cc36f9884326..2203dd0c2449 100644
--- a/dom/media/encoder/OmxTrackEncoder.cpp
+++ b/dom/media/encoder/OmxTrackEncoder.cpp
@@ -26,6 +26,13 @@ namespace mozilla {
 #define ENCODER_CONFIG_FRAME_RATE 30 // fps
 #define GET_ENCODED_VIDEO_FRAME_TIMEOUT 100000 // microseconds
 
+OmxVideoTrackEncoder::OmxVideoTrackEncoder()
+  : VideoTrackEncoder()
+{}
+
+OmxVideoTrackEncoder::~OmxVideoTrackEncoder()
+{}
+
 nsresult
 OmxVideoTrackEncoder::Init(int aWidth, int aHeight, int aDisplayWidth,
                            int aDisplayHeight, TrackRate aTrackRate)
@@ -162,6 +169,13 @@ OmxVideoTrackEncoder::GetEncodedTrack(EncodedFrameContainer& aData)
   return NS_OK;
 }
 
+OmxAudioTrackEncoder::OmxAudioTrackEncoder()
+  : AudioTrackEncoder()
+{}
+
+OmxAudioTrackEncoder::~OmxAudioTrackEncoder()
+{}
+
 nsresult
 OmxAudioTrackEncoder::AppendEncodedFrames(EncodedFrameContainer& aContainer)
 {
diff --git a/dom/media/encoder/OmxTrackEncoder.h b/dom/media/encoder/OmxTrackEncoder.h
index b11dc2570785..cf447e07853f 100644
--- a/dom/media/encoder/OmxTrackEncoder.h
+++ b/dom/media/encoder/OmxTrackEncoder.h
@@ -26,9 +26,8 @@ namespace mozilla {
 class OmxVideoTrackEncoder: public VideoTrackEncoder
 {
 public:
-  OmxVideoTrackEncoder()
-    : VideoTrackEncoder()
-  {}
+  OmxVideoTrackEncoder();
+  ~OmxVideoTrackEncoder();
 
   already_AddRefed<TrackMetadataBase> GetMetadata() MOZ_OVERRIDE;
 
@@ -46,9 +45,8 @@ private:
 class OmxAudioTrackEncoder : public AudioTrackEncoder
 {
 public:
-  OmxAudioTrackEncoder()
-    : AudioTrackEncoder()
-  {}
+  OmxAudioTrackEncoder();
+  ~OmxAudioTrackEncoder();
 
   already_AddRefed<TrackMetadataBase> GetMetadata() = 0;