Support for providing media stream audio track to speech recognition

Source/modules/speech/SpeechRecognition.h

Index: Source/modules/speech/SpeechRecognition.h
diff --git a/Source/modules/speech/SpeechRecognition.h b/Source/modules/speech/SpeechRecognition.h
index d39abd856b6718c3bd1dbaf225c5c172af13a02a..ac0c03bd79de21589f8940cf62d87fe8c3114970 100644
--- a/Source/modules/speech/SpeechRecognition.h
+++ b/Source/modules/speech/SpeechRecognition.h
@@ -28,6 +28,7 @@
 
 #include "core/dom/ActiveDOMObject.h"
 #include "modules/EventTargetModules.h"
+#include "modules/mediastream/MediaStreamTrack.h"
 #include "modules/speech/SpeechGrammarList.h"
 #include "modules/speech/SpeechRecognitionResult.h"
 #include "platform/heap/Handle.h"
@@ -59,6 +60,8 @@ public:
     void setInterimResults(bool interimResults) { m_interimResults = interimResults; }
     unsigned long maxAlternatives() { return m_maxAlternatives; }
     void setMaxAlternatives(unsigned long maxAlternatives) { m_maxAlternatives = maxAlternatives; }
+    MediaStreamTrack* audioTrack() { return m_audioTrack; }
+    void setAudioTrack(MediaStreamTrack* audioTrack) { m_audioTrack = audioTrack; }
 
     // Callable by the user.
     void start(ExceptionState&);
@@ -104,6 +107,7 @@ private:
     explicit SpeechRecognition(ExecutionContext*);
 
     Member<SpeechGrammarList> m_grammars;
+    Member<MediaStreamTrack> m_audioTrack;
     String m_lang;
     bool m_continuous;
     bool m_interimResults;