Detach SpeechRecognitionController upon page detach.

Source/modules/speech/SpeechRecognition.h

 /*
  * 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
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef SpeechRecognition_h
 #define SpeechRecognition_h
 
 #include "core/dom/ActiveDOMObject.h"
+#include "core/frame/FrameDestructionObserver.h"
 #include "modules/EventTargetModules.h"
 #include "modules/speech/SpeechGrammarList.h"
 #include "modules/speech/SpeechRecognitionResult.h"
 #include "platform/heap/Handle.h"
+#include "public/platform/WebPrivatePtr.h"
 #include "wtf/Compiler.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class ExceptionState;
 class ExecutionContext;
 class MediaStreamTrack;
 class SpeechRecognitionController;
 class SpeechRecognitionError;
 
-class SpeechRecognition final : public RefCountedGarbageCollectedEventTargetWithInlineData<SpeechRecognition>, public ActiveDOMObject {
+class SpeechRecognition final : public RefCountedGarbageCollectedEventTargetWithInlineData<SpeechRecognition>, public FrameDestructionObserver, public ActiveDOMObject {
     DEFINE_EVENT_TARGET_REFCOUNTING_WILL_BE_REMOVED(RefCountedGarbageCollected<SpeechRecognition>);
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(SpeechRecognition);
     DEFINE_WRAPPERTYPEINFO();
 public:
     static SpeechRecognition* create(ExecutionContext*);
     virtual ~SpeechRecognition();
 
     // SpeechRecognition.idl implemementation.
     // Attributes.
     SpeechGrammarList* grammars() { return m_grammars; }
@@ skipping 42 matching lines @@
     DEFINE_ATTRIBUTE_EVENT_LISTENER(soundend);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(audioend);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(result);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(nomatch);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(error);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(start);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(end);
 
     DECLARE_VIRTUAL_TRACE();
 
+    // FrameDestructionObserver
+    virtual void frameDestroyed() override;
+
 private:
-    explicit SpeechRecognition(ExecutionContext*);
+    SpeechRecognition(LocalFrame*, ExecutionContext*);
 
     Member<SpeechGrammarList> m_grammars;
     Member<MediaStreamTrack> m_audioTrack;
     String m_lang;
     bool m_continuous;
     bool m_interimResults;
     unsigned long m_maxAlternatives;
 
     RawPtrWillBeMember<SpeechRecognitionController> m_controller;
     bool m_stoppedByActiveDOMObject;
     bool m_started;
     bool m_stopping;
     HeapVector<Member<SpeechRecognitionResult>> m_finalResults;
 };
 
+// FIXME: Oilpan: two GarbageCollectedLifetime-based subclasses introduces
+// ambiguity for WebPrivatePtr<T>'s LifeTimeOf<T> inference of lifetime.
+template<>
+class LifetimeOf<SpeechRecognition> {
+public:
+#if ENABLE(OILPAN)
+    static const LifetimeManagementType value = RefCountedGarbageCollectedLifetime;
+#else
+    static const LifetimeManagementType value = RefCountedLifetime;
+#endif
+};
+
 } // namespace blink
 
 #endif // SpeechRecognition_h