Detach SpeechRecognitionController upon page detach.

Source/modules/speech/SpeechRecognitionController.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *  * Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  *  * Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 15 matching lines @@
 #include "config.h"
 #include "modules/speech/SpeechRecognitionController.h"
 
 namespace blink {
 
 const char* SpeechRecognitionController::supplementName()
 {
     return "SpeechRecognitionController";
 }
 
-SpeechRecognitionController::SpeechRecognitionController(PassOwnPtr<SpeechRecognitionClient> client)
-    : m_client(client)
+SpeechRecognitionController::SpeechRecognitionController(Page* page, PassOwnPtr<SpeechRecognitionClient> client)
+    : PageLifecycleObserver(page)
+    , m_client(client)
 {
 }
 
 SpeechRecognitionController::~SpeechRecognitionController()
 {
     // FIXME: Call m_client->pageDestroyed(); once we have implemented a client.
 }
 
-PassOwnPtrWillBeRawPtr<SpeechRecognitionController> SpeechRecognitionController::create(PassOwnPtr<SpeechRecognitionClient> client)
+DEFINE_TRACE(SpeechRecognitionController)
 {
-    return adoptPtrWillBeNoop(new SpeechRecognitionController(client));
+    WillBeHeapSupplement<Page>::trace(visitor);
+    PageLifecycleObserver::trace(visitor);
+}
+
+PassOwnPtrWillBeRawPtr<SpeechRecognitionController> SpeechRecognitionController::create(Page* page, PassOwnPtr<SpeechRecognitionClient> client)
+{
+return adoptPtrWillBeNoop(new SpeechRecognitionController(page, client));
+}
+
+SpeechRecognitionController* SpeechRecognitionController::from(Page* page)
+{
+    return static_cast<SpeechRecognitionController*>(WillBeHeapSupplement<Page>::from(page, supplementName()));
 }
 
 void provideSpeechRecognitionTo(Page& page, PassOwnPtr<SpeechRecognitionClient> client)
 {
-    SpeechRecognitionController::provideTo(page, SpeechRecognitionController::supplementName(), SpeechRecognitionController::create(client));
+    SpeechRecognitionController::provideTo(page, SpeechRecognitionController::supplementName(), SpeechRecognitionController::create(&page, client));
+}
+
+void SpeechRecognitionController::start(SpeechRecognition* recognition, const SpeechGrammarList* grammars, const String& lang, bool continuous, bool interimResults, unsigned long maxAlternatives, MediaStreamTrack* audioTrack)
+{
+    if (!page())
+        return;
+
+    m_client->start(recognition, grammars, lang, continuous, interimResults, maxAlternatives, audioTrack);
+}
+
+void SpeechRecognitionController::stop(SpeechRecognition* recognition)
+{
+    if (!page())
+        return;
+
+    m_client->stop(recognition);
+}
+
+void SpeechRecognitionController::abort(SpeechRecognition* recognition)
+{
+    if (!page())
+        return;
+
+    m_client->abort(recognition);
 }
 
 } // namespace blink