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..3b7dee2a9bd2ed1cb8ce6c4212bd681869f826c8 100644
--- a/Source/modules/webaudio/AudioContext.cpp
+++ b/Source/modules/webaudio/AudioContext.cpp
@@ -155,9 +155,6 @@ 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();
 
@@ -217,9 +214,6 @@ void AudioContext::clear()
         m_nodesToDelete.appendVector(m_nodesMarkedForDeletion);
         m_nodesMarkedForDeletion.clear();
     } while (m_nodesToDelete.size());
-
-    // It was set in constructCommon.
-    unsetPendingActivity(this);
 }
 
 void AudioContext::uninitialize()
@@ -276,6 +270,12 @@ void AudioContext::stop()
     callOnMainThread(stopDispatch, this);
 }
 
+bool AudioContext::hasPendingActivity() const
+{
+    // According to spec AudioContext must die only after page navigate.
+    return executionContext()->activeDOMObjectsAreStopped();

[kouhei (in TOK), 2014/03/21 16:32:40]

Sorry this must be the opposite!

+}
+
 PassRefPtr<AudioBuffer> AudioContext::createBuffer(unsigned numberOfChannels, size_t numberOfFrames, float sampleRate, ExceptionState& exceptionState)
 {
     RefPtr<AudioBuffer> audioBuffer = AudioBuffer::create(numberOfChannels, numberOfFrames, sampleRate);