Revert of Implement suspend/resume for AudioContext

Source/modules/webaudio/AudioContext.h

Index: Source/modules/webaudio/AudioContext.h
diff --git a/Source/modules/webaudio/AudioContext.h b/Source/modules/webaudio/AudioContext.h
index 021168019b2129b36a502dc25768272d78bd85e7..fde6ef7ed7740ff95a48abdf0ce71b0919cf28bc 100644
--- a/Source/modules/webaudio/AudioContext.h
+++ b/Source/modules/webaudio/AudioContext.h
@@ -25,8 +25,6 @@
 #ifndef AudioContext_h
 #define AudioContext_h
 
-#include "bindings/core/v8/ScriptPromise.h"
-#include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "core/dom/ActiveDOMObject.h"
 #include "core/events/EventListener.h"
 #include "modules/EventTargetModules.h"
@@ -79,16 +77,6 @@
     DEFINE_WRAPPERTYPEINFO();
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(AudioContext);
 public:
-    // The state of an audio context.  On creation, the state is Paused. The state is Running if
-    // audio is being processed (audio graph is being pulled for data). The state is Released if the
-    // audio context has been released.  The valid transitions are from Paused to either Running or
-    // Released; Running to Paused or Released. Once Released, there are no valid transitions.
-    enum AudioContextState {
-        Paused,
-        Running,
-        Released
-    };
-
     // Create an AudioContext for rendering to the audio hardware.
     static AudioContext* create(Document&, ExceptionState&);
 
@@ -107,7 +95,6 @@
     size_t currentSampleFrame() const { return m_destinationNode->currentSampleFrame(); }
     double currentTime() const { return m_destinationNode->currentTime(); }
     float sampleRate() const { return m_destinationNode->sampleRate(); }
-    String state() const;
 
     AudioBuffer* createBuffer(unsigned numberOfChannels, size_t numberOfFrames, float sampleRate, ExceptionState&);
 
@@ -141,10 +128,6 @@
     OscillatorNode* createOscillator();
     PeriodicWave* createPeriodicWave(Float32Array* real, Float32Array* imag, ExceptionState&);
 
-    // Pause/Resume
-    void suspendContext(ExceptionState&);
-    ScriptPromise resumeContext(ScriptState*);
-
     // When a source node has no more processing to do (has finished playing), then it tells the context to dereference it.
     void notifyNodeFinishedProcessing(AudioNode*);
 
@@ -291,22 +274,6 @@
     // AudioNode::breakConnection() when we remove an AudioNode from this.
     HeapVector<Member<AudioNode> > m_referencedNodes;
 
-    // Stop rendering the audio graph.
-    void stopRendering();
-
-    // Handle Promises for resume().
-    void resolvePromisesForResume();
-    void resolvePromisesForResumeOnMainThread();
-
-    // Vector of promises created by resume(). It takes time to handle them, so we collect all of
-    // the promises here until they can be resolved or rejected.
-    Vector<RefPtr<ScriptPromiseResolver> > m_resumePromises;
-
-    // True if we're in the process of resolving promises for resume().  Resolving can take some
-    // time and the audio context process loop is very fast, so we don't want to call resolve an
-    // excessive number of times.
-    bool m_isResolvingResumePromises;
-
     class AudioNodeDisposer {
     public:
         explicit AudioNodeDisposer(AudioNode& node) : m_node(node) { }
@@ -371,9 +338,6 @@
 
     bool m_isOfflineContext;
 
-    AudioContextState m_contextState;
-    void setContextState(AudioContextState);
-
     AsyncAudioDecoder m_audioDecoder;
 
     // Collection of nodes where the channel count mode has changed. We want the channel count mode