Remove {,un}setPendingActivity from AudioContext.

Source/modules/webaudio/AudioContext.cpp

Index: Source/modules/webaudio/AudioContext.cpp
diff --git a/Source/modules/webaudio/AudioContext.cpp b/Source/modules/webaudio/AudioContext.cpp
index 1fa9d78d1487be98833b4ca9eed55da21e13c2ac..e25ea5d92dbe9fd16adfc132aba682212f5fe74f 100644
--- a/Source/modules/webaudio/AudioContext.cpp
+++ b/Source/modules/webaudio/AudioContext.cpp
@@ -114,6 +114,7 @@ PassRefPtr<AudioContext> AudioContext::create(Document& document, unsigned numbe
 AudioContext::AudioContext(Document* document)
     : ActiveDOMObject(document)
     , m_isStopScheduled(false)
+    , m_isCleared(false)
     , m_isInitialized(false)
     , m_isAudioThreadFinished(false)
     , m_destinationNode(nullptr)
@@ -134,6 +135,7 @@ AudioContext::AudioContext(Document* document)
 AudioContext::AudioContext(Document* document, unsigned numberOfChannels, size_t numberOfFrames, float sampleRate)
     : ActiveDOMObject(document)
     , m_isStopScheduled(false)
+    , m_isCleared(false)
     , m_isInitialized(false)
     , m_isAudioThreadFinished(false)
     , m_destinationNode(nullptr)
@@ -155,9 +157,6 @@ AudioContext::AudioContext(Document* document, unsigned numberOfChannels, size_t
 void AudioContext::constructCommon()
 {
     ScriptWrappable::init(this);
-    // According to spec AudioContext must die only after page navigate.
-    // Lets mark it as ActiveDOMObject with pending activity and unmark it in clear method.
-    setPendingActivity(this);
 
     FFTFrame::initialize();
 
@@ -171,7 +170,7 @@ AudioContext::~AudioContext()
 #endif
     // AudioNodes keep a reference to their context, so there should be no way to be in the destructor if there are still AudioNodes around.
     ASSERT(!m_isInitialized);
-    ASSERT(m_isStopScheduled);

[kouhei (in TOK), 2014/03/26 01:21:34]

m_isStopScheduled is not set when OfflineAudioContext::create fails after
creating instance.

+    ASSERT(m_isCleared);
     ASSERT(!m_nodesToDelete.size());
     ASSERT(!m_referencedNodes.size());
     ASSERT(!m_finishedNodes.size());
@@ -218,8 +217,7 @@ void AudioContext::clear()
         m_nodesMarkedForDeletion.clear();
     } while (m_nodesToDelete.size());
 
-    // It was set in constructCommon.
-    unsetPendingActivity(this);
+    m_isCleared = true;
 }
 
 void AudioContext::uninitialize()
@@ -276,6 +274,12 @@ void AudioContext::stop()
     callOnMainThread(stopDispatch, this);
 }
 
+bool AudioContext::hasPendingActivity() const
+{
+    // According to spec AudioContext must die only after page navigates.
+    return m_isCleared;
+}
+
 PassRefPtr<AudioBuffer> AudioContext::createBuffer(unsigned numberOfChannels, size_t numberOfFrames, float sampleRate, ExceptionState& exceptionState)
 {
     RefPtr<AudioBuffer> audioBuffer = AudioBuffer::create(numberOfChannels, numberOfFrames, sampleRate);