Rename AbstractAudioContext to BaseAudioContext

third_party/WebKit/Source/modules/webaudio/BaseAudioContext.cpp

 /*
  * Copyright (C) 2010, 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:
  * 1.  Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2.  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 APPLE INC. AND ITS CONTRIBUTORS ``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 APPLE INC. OR ITS 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.
  */
 
-#include "modules/webaudio/AbstractAudioContext.h"
+#include "modules/webaudio/BaseAudioContext.h"
 
 #include "bindings/core/v8/Dictionary.h"
 #include "bindings/core/v8/ExceptionMessages.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "core/dom/DOMException.h"
 #include "core/dom/Document.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/ExecutionContextTask.h"
@@ skipping 44 matching lines @@
 enum UserGestureRecord {
     UserGestureRequiredAndAvailable = 0,
     UserGestureRequiredAndNotAvailable,
     UserGestureNotRequiredAndAvailable,
     UserGestureNotRequiredAndNotAvailable,
     UserGestureRecordMax
 };
 
 } // anonymous namespace
 
-AbstractAudioContext* AbstractAudioContext::create(Document& document, ExceptionState& exceptionState)
+BaseAudioContext* BaseAudioContext::create(Document& document, ExceptionState& exceptionState)
 {
     return AudioContext::create(document, exceptionState);
 }
 
 // FIXME(dominicc): Devolve these constructors to AudioContext
 // and OfflineAudioContext respectively.
 
 // Constructor for rendering to the audio hardware.
-AbstractAudioContext::AbstractAudioContext(Document* document)
+BaseAudioContext::BaseAudioContext(Document* document)
     : ActiveScriptWrappable(this)
     , ActiveDOMObject(document)
     , m_destinationNode(nullptr)
     , m_isCleared(false)
     , m_isResolvingResumePromises(false)
     , m_userGestureRequired(false)
     , m_connectionCount(0)
     , m_deferredTaskHandler(DeferredTaskHandler::create())
     , m_contextState(Suspended)
     , m_closedContextSampleRate(-1)
     , m_periodicWaveSine(nullptr)
     , m_periodicWaveSquare(nullptr)
     , m_periodicWaveSawtooth(nullptr)
     , m_periodicWaveTriangle(nullptr)
 {
     // TODO(mlamouri): we might want to use other ways of checking for this but
     // in order to record metrics, re-using the HTMLMediaElement setting is
     // probably the simplest solution.
     if (document->settings() && document->settings()->mediaPlaybackRequiresUserGesture())
         m_userGestureRequired = true;
 
     m_destinationNode = DefaultAudioDestinationNode::create(this);
 
     initialize();
 }
 
 // Constructor for offline (non-realtime) rendering.
-AbstractAudioContext::AbstractAudioContext(Document* document, unsigned numberOfChannels, size_t numberOfFrames, float sampleRate)
+BaseAudioContext::BaseAudioContext(Document* document, unsigned numberOfChannels, size_t numberOfFrames, float sampleRate)
     : ActiveScriptWrappable(this)
     , ActiveDOMObject(document)
     , m_destinationNode(nullptr)
     , m_isCleared(false)
     , m_isResolvingResumePromises(false)
     , m_userGestureRequired(false)
     , m_connectionCount(0)
     , m_deferredTaskHandler(DeferredTaskHandler::create())
     , m_contextState(Suspended)
     , m_closedContextSampleRate(-1)
     , m_periodicWaveSine(nullptr)
     , m_periodicWaveSquare(nullptr)
     , m_periodicWaveSawtooth(nullptr)
     , m_periodicWaveTriangle(nullptr)
 {
     // TODO(mlamouri): we might want to use other ways of checking for this but
     // in order to record metrics, re-using the HTMLMediaElement setting is
     // probably the simplest solution.
     if (document->settings() && document->settings()->mediaPlaybackRequiresUserGesture())
         m_userGestureRequired = true;
 }
 
-AbstractAudioContext::~AbstractAudioContext()
+BaseAudioContext::~BaseAudioContext()
 {
     deferredTaskHandler().contextWillBeDestroyed();
     // 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(!isDestinationInitialized());
-    ASSERT(!m_activeSourceNodes.size());
-    ASSERT(!m_finishedSourceHandlers.size());
-    ASSERT(!m_isResolvingResumePromises);
-    ASSERT(!m_resumeResolvers.size());
+    DCHECK(!isDestinationInitialized());
+    DCHECK(!m_activeSourceNodes.size());
+    DCHECK(!m_finishedSourceHandlers.size());
+    DCHECK(!m_isResolvingResumePromises);
+    DCHECK(!m_resumeResolvers.size());
 }
 
-void AbstractAudioContext::initialize()
+void BaseAudioContext::initialize()
 {
     if (isDestinationInitialized())
         return;
 
     FFTFrame::initialize();
 
     if (m_destinationNode) {
         m_destinationNode->handler().initialize();
         // The AudioParams in the listener need access to the destination node, so only create the
         // listener if the destination node exists.
         m_listener = AudioListener::create(*this);
     }
 }
 
-void AbstractAudioContext::clear()
+void BaseAudioContext::clear()
 {
     m_destinationNode.clear();
     // The audio rendering thread is dead.  Nobody will schedule AudioHandler
     // deletion.  Let's do it ourselves.
     deferredTaskHandler().clearHandlersToBeDeleted();
     m_isCleared = true;
 }
 
-void AbstractAudioContext::uninitialize()
+void BaseAudioContext::uninitialize()
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     if (!isDestinationInitialized())
         return;
 
     // This stops the audio thread and all audio rendering.
     if (m_destinationNode)
         m_destinationNode->handler().uninitialize();
 
     // Get rid of the sources which may still be playing.
     releaseActiveSourceNodes();
 
     // Reject any pending resolvers before we go away.
     rejectPendingResolvers();
     didClose();
 
-    ASSERT(m_listener);
+    DCHECK(m_listener);
     m_listener->waitForHRTFDatabaseLoaderThreadCompletion();
 
     clear();
 }
 
-void AbstractAudioContext::stop()
+void BaseAudioContext::stop()
 {
     uninitialize();
 }
 
-bool AbstractAudioContext::hasPendingActivity() const
+bool BaseAudioContext::hasPendingActivity() const
 {
     // There's no pending activity if the audio context has been cleared.
     return !m_isCleared;
 }
 
-AudioDestinationNode* AbstractAudioContext::destination() const
+AudioDestinationNode* BaseAudioContext::destination() const
 {
     // Cannot be called from the audio thread because this method touches objects managed by Oilpan,
     // and the audio thread is not managed by Oilpan.
-    ASSERT(!isAudioThread());
+    DCHECK(!isAudioThread());
     return m_destinationNode;
 }
 
-void AbstractAudioContext::throwExceptionForClosedState(ExceptionState& exceptionState)
+void BaseAudioContext::throwExceptionForClosedState(ExceptionState& exceptionState)
 {
     exceptionState.throwDOMException(InvalidStateError, "AudioContext has been closed.");
 }
 
-AudioBuffer* AbstractAudioContext::createBuffer(unsigned numberOfChannels, size_t numberOfFrames, float sampleRate, ExceptionState& exceptionState)
+AudioBuffer* BaseAudioContext::createBuffer(unsigned numberOfChannels, size_t numberOfFrames, float sampleRate, ExceptionState& exceptionState)
 {
     // It's ok to call createBuffer, even if the context is closed because the AudioBuffer doesn't
     // really "belong" to any particular context.
 
     AudioBuffer* buffer = AudioBuffer::create(numberOfChannels, numberOfFrames, sampleRate, exceptionState);
 
     if (buffer) {
         // Only record the data if the creation succeeded.
         DEFINE_STATIC_LOCAL(SparseHistogram, audioBufferChannelsHistogram,
             ("WebAudio.AudioBuffer.NumberOfChannels"));
@@ skipping 27 matching lines @@
             DEFINE_STATIC_LOCAL(CustomCountHistogram, audioBufferSampleRateRatioHistogram,
                 ("WebAudio.AudioBuffer.SampleRateRatio", 1, 6400, 50));
             float ratio = 100 * sampleRate / this->sampleRate();
             audioBufferSampleRateRatioHistogram.count(static_cast<int>(0.5 + ratio));
         }
     }
 
     return buffer;
 }
 
-ScriptPromise AbstractAudioContext::decodeAudioData(ScriptState* scriptState, DOMArrayBuffer* audioData, AudioBufferCallback* successCallback, AudioBufferCallback* errorCallback, ExceptionState& exceptionState)
+ScriptPromise BaseAudioContext::decodeAudioData(ScriptState* scriptState, DOMArrayBuffer* audioData, AudioBufferCallback* successCallback, AudioBufferCallback* errorCallback, ExceptionState& exceptionState)
 {
-    ASSERT(isMainThread());
-    ASSERT(audioData);
+    DCHECK(isMainThread());
+    DCHECK(audioData);
 
     ScriptPromiseResolver* resolver = ScriptPromiseResolver::create(scriptState);
     ScriptPromise promise = resolver->promise();
 
     float rate = isContextClosed() ? closedContextSampleRate() : sampleRate();
 
-    ASSERT(rate > 0);
+    DCHECK_GT(rate, 0);
 
     m_decodeAudioResolvers.add(resolver);
     m_audioDecoder.decodeAsync(audioData, rate, successCallback, errorCallback, resolver, this);
 
     return promise;
 }
 
-void AbstractAudioContext::handleDecodeAudioData(AudioBuffer* audioBuffer, ScriptPromiseResolver* resolver, AudioBufferCallback* successCallback, AudioBufferCallback* errorCallback)
+void BaseAudioContext::handleDecodeAudioData(AudioBuffer* audioBuffer, ScriptPromiseResolver* resolver, AudioBufferCallback* successCallback, AudioBufferCallback* errorCallback)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     if (audioBuffer) {
         // Resolve promise successfully and run the success callback
         resolver->resolve(audioBuffer);
         if (successCallback)
             successCallback->handleEvent(audioBuffer);
     } else {
         // Reject the promise and run the error callback
         DOMException* error = DOMException::create(EncodingError, "Unable to decode audio data");
         resolver->reject(error);
         if (errorCallback)
             errorCallback->handleEvent(error);
     }
 
     // We've resolved the promise.  Remove it now.
-    ASSERT(m_decodeAudioResolvers.contains(resolver));
+    DCHECK(m_decodeAudioResolvers.contains(resolver));
     m_decodeAudioResolvers.remove(resolver);
 }
 
-AudioBufferSourceNode* AbstractAudioContext::createBufferSource(ExceptionState& exceptionState)
+AudioBufferSourceNode* BaseAudioContext::createBufferSource(ExceptionState& exceptionState)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     AudioBufferSourceNode* node = AudioBufferSourceNode::create(*this, exceptionState);
 
     // Do not add a reference to this source node now. The reference will be added when start() is
     // called.
 
     return node;
 }
 
-MediaElementAudioSourceNode* AbstractAudioContext::createMediaElementSource(HTMLMediaElement* mediaElement, ExceptionState& exceptionState)
+MediaElementAudioSourceNode* BaseAudioContext::createMediaElementSource(HTMLMediaElement* mediaElement, ExceptionState& exceptionState)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     return MediaElementAudioSourceNode::create(*this, *mediaElement, exceptionState);
 }
 
-MediaStreamAudioSourceNode* AbstractAudioContext::createMediaStreamSource(MediaStream* mediaStream, ExceptionState& exceptionState)
+MediaStreamAudioSourceNode* BaseAudioContext::createMediaStreamSource(MediaStream* mediaStream, ExceptionState& exceptionState)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     return MediaStreamAudioSourceNode::create(*this, *mediaStream, exceptionState);
 }
 
-MediaStreamAudioDestinationNode* AbstractAudioContext::createMediaStreamDestination(ExceptionState& exceptionState)
+MediaStreamAudioDestinationNode* BaseAudioContext::createMediaStreamDestination(ExceptionState& exceptionState)
 {
     DCHECK(isMainThread());
 
     // Set number of output channels to stereo by default.
     return MediaStreamAudioDestinationNode::create(*this, 2, exceptionState);
 }
 
-ScriptProcessorNode* AbstractAudioContext::createScriptProcessor(ExceptionState& exceptionState)
+ScriptProcessorNode* BaseAudioContext::createScriptProcessor(ExceptionState& exceptionState)
 {
     DCHECK(isMainThread());
 
     return ScriptProcessorNode::create(*this, exceptionState);
 }
 
-ScriptProcessorNode* AbstractAudioContext::createScriptProcessor(size_t bufferSize, ExceptionState& exceptionState)
+ScriptProcessorNode* BaseAudioContext::createScriptProcessor(size_t bufferSize, ExceptionState& exceptionState)
 {
     DCHECK(isMainThread());
 
     return ScriptProcessorNode::create(*this, bufferSize, exceptionState);
 }
 
-ScriptProcessorNode* AbstractAudioContext::createScriptProcessor(size_t bufferSize, size_t numberOfInputChannels, ExceptionState& exceptionState)
+ScriptProcessorNode* BaseAudioContext::createScriptProcessor(size_t bufferSize, size_t numberOfInputChannels, ExceptionState& exceptionState)
 {
     DCHECK(isMainThread());
 
     return ScriptProcessorNode::create(*this, bufferSize, numberOfInputChannels, exceptionState);
 }
 
-ScriptProcessorNode* AbstractAudioContext::createScriptProcessor(size_t bufferSize, size_t numberOfInputChannels, size_t numberOfOutputChannels, ExceptionState& exceptionState)
+ScriptProcessorNode* BaseAudioContext::createScriptProcessor(size_t bufferSize, size_t numberOfInputChannels, size_t numberOfOutputChannels, ExceptionState& exceptionState)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     return ScriptProcessorNode::create(
         *this,
         bufferSize,
         numberOfInputChannels,
         numberOfOutputChannels,
         exceptionState);
 }
 
-StereoPannerNode* AbstractAudioContext::createStereoPanner(ExceptionState& exceptionState)
+StereoPannerNode* BaseAudioContext::createStereoPanner(ExceptionState& exceptionState)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     return StereoPannerNode::create(*this, exceptionState);
 }
 
-BiquadFilterNode* AbstractAudioContext::createBiquadFilter(ExceptionState& exceptionState)
+BiquadFilterNode* BaseAudioContext::createBiquadFilter(ExceptionState& exceptionState)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     return BiquadFilterNode::create(*this, exceptionState);
 }
 
-WaveShaperNode* AbstractAudioContext::createWaveShaper(ExceptionState& exceptionState)
+WaveShaperNode* BaseAudioContext::createWaveShaper(ExceptionState& exceptionState)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     return WaveShaperNode::create(*this, exceptionState);
 }
 
-PannerNode* AbstractAudioContext::createPanner(ExceptionState& exceptionState)
+PannerNode* BaseAudioContext::createPanner(ExceptionState& exceptionState)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     return PannerNode::create(*this, exceptionState);
 }
 
-ConvolverNode* AbstractAudioContext::createConvolver(ExceptionState& exceptionState)
+ConvolverNode* BaseAudioContext::createConvolver(ExceptionState& exceptionState)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     return ConvolverNode::create(*this, exceptionState);
 }
 
-DynamicsCompressorNode* AbstractAudioContext::createDynamicsCompressor(ExceptionState& exceptionState)
+DynamicsCompressorNode* BaseAudioContext::createDynamicsCompressor(ExceptionState& exceptionState)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     return DynamicsCompressorNode::create(*this, exceptionState);
 }
 
-AnalyserNode* AbstractAudioContext::createAnalyser(ExceptionState& exceptionState)
+AnalyserNode* BaseAudioContext::createAnalyser(ExceptionState& exceptionState)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     return AnalyserNode::create(*this, exceptionState);
 }
 
-GainNode* AbstractAudioContext::createGain(ExceptionState& exceptionState)
+GainNode* BaseAudioContext::createGain(ExceptionState& exceptionState)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     return GainNode::create(*this, exceptionState);
 }
 
-DelayNode* AbstractAudioContext::createDelay(ExceptionState& exceptionState)
+DelayNode* BaseAudioContext::createDelay(ExceptionState& exceptionState)
 {
     DCHECK(isMainThread());
 
     return DelayNode::create(*this, exceptionState);
 }
 
-DelayNode* AbstractAudioContext::createDelay(double maxDelayTime, ExceptionState& exceptionState)
+DelayNode* BaseAudioContext::createDelay(double maxDelayTime, ExceptionState& exceptionState)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     return DelayNode::create(*this, maxDelayTime, exceptionState);
 }
 
-ChannelSplitterNode* AbstractAudioContext::createChannelSplitter(ExceptionState& exceptionState)
+ChannelSplitterNode* BaseAudioContext::createChannelSplitter(ExceptionState& exceptionState)
 {
     DCHECK(isMainThread());
 
     return ChannelSplitterNode::create(*this, exceptionState);
 }
 
-ChannelSplitterNode* AbstractAudioContext::createChannelSplitter(size_t numberOfOutputs, ExceptionState& exceptionState)
+ChannelSplitterNode* BaseAudioContext::createChannelSplitter(size_t numberOfOutputs, ExceptionState& exceptionState)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     return ChannelSplitterNode::create(*this, numberOfOutputs, exceptionState);
 }
 
-ChannelMergerNode* AbstractAudioContext::createChannelMerger(ExceptionState& exceptionState)
+ChannelMergerNode* BaseAudioContext::createChannelMerger(ExceptionState& exceptionState)
 {
     DCHECK(isMainThread());
 
     return ChannelMergerNode::create(*this, exceptionState);
 }
 
-ChannelMergerNode* AbstractAudioContext::createChannelMerger(size_t numberOfInputs, ExceptionState& exceptionState)
+ChannelMergerNode* BaseAudioContext::createChannelMerger(size_t numberOfInputs, ExceptionState& exceptionState)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     return ChannelMergerNode::create(*this, numberOfInputs, exceptionState);
 }
 
-OscillatorNode* AbstractAudioContext::createOscillator(ExceptionState& exceptionState)
+OscillatorNode* BaseAudioContext::createOscillator(ExceptionState& exceptionState)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     return OscillatorNode::create(*this, exceptionState);
 }
 
-PeriodicWave* AbstractAudioContext::createPeriodicWave(DOMFloat32Array* real, DOMFloat32Array* imag, ExceptionState& exceptionState)
+PeriodicWave* BaseAudioContext::createPeriodicWave(DOMFloat32Array* real, DOMFloat32Array* imag, ExceptionState& exceptionState)
 {
     DCHECK(isMainThread());
 
     return PeriodicWave::create(*this, real, imag, false, exceptionState);
 }
 
-PeriodicWave* AbstractAudioContext::createPeriodicWave(DOMFloat32Array* real, DOMFloat32Array* imag, const PeriodicWaveConstraints& options, ExceptionState& exceptionState)
+PeriodicWave* BaseAudioContext::createPeriodicWave(DOMFloat32Array* real, DOMFloat32Array* imag, const PeriodicWaveConstraints& options, ExceptionState& exceptionState)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     bool disable = options.hasDisableNormalization() ? options.disableNormalization() : false;
 
     return PeriodicWave::create(*this, real, imag, disable, exceptionState);
 }
 
-IIRFilterNode* AbstractAudioContext::createIIRFilter(Vector<double> feedforwardCoef, Vector<double> feedbackCoef,  ExceptionState& exceptionState)
+IIRFilterNode* BaseAudioContext::createIIRFilter(Vector<double> feedforwardCoef, Vector<double> feedbackCoef,  ExceptionState& exceptionState)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     return IIRFilterNode::create(*this, feedforwardCoef, feedbackCoef, exceptionState);
 }
 
-PeriodicWave* AbstractAudioContext::periodicWave(int type)
+PeriodicWave* BaseAudioContext::periodicWave(int type)
 {
     switch (type) {
     case OscillatorHandler::SINE:
         // Initialize the table if necessary
         if (!m_periodicWaveSine)
             m_periodicWaveSine = PeriodicWave::createSine(sampleRate());
         return m_periodicWaveSine;
     case OscillatorHandler::SQUARE:
         // Initialize the table if necessary
         if (!m_periodicWaveSquare)
             m_periodicWaveSquare = PeriodicWave::createSquare(sampleRate());
         return m_periodicWaveSquare;
     case OscillatorHandler::SAWTOOTH:
         // Initialize the table if necessary
         if (!m_periodicWaveSawtooth)
             m_periodicWaveSawtooth = PeriodicWave::createSawtooth(sampleRate());
         return m_periodicWaveSawtooth;
     case OscillatorHandler::TRIANGLE:
         // Initialize the table if necessary
         if (!m_periodicWaveTriangle)
             m_periodicWaveTriangle = PeriodicWave::createTriangle(sampleRate());
         return m_periodicWaveTriangle;
     default:
-        ASSERT_NOT_REACHED();
+        NOTREACHED();
         return nullptr;
     }
 }
 
-void AbstractAudioContext::recordUserGestureState()
+void BaseAudioContext::recordUserGestureState()
 {
     DEFINE_STATIC_LOCAL(EnumerationHistogram, userGestureHistogram, ("WebAudio.UserGesture", UserGestureRecordMax));
 
     if (!m_userGestureRequired) {
         if (UserGestureIndicator::processingUserGesture())
             userGestureHistogram.count(UserGestureNotRequiredAndAvailable);
         else
             userGestureHistogram.count(UserGestureNotRequiredAndNotAvailable);
         return;
     }
     if (!UserGestureIndicator::processingUserGesture()) {
         userGestureHistogram.count(UserGestureRequiredAndNotAvailable);
         return;
     }
     userGestureHistogram.count(UserGestureRequiredAndAvailable);
     m_userGestureRequired = false;
 }
 
-String AbstractAudioContext::state() const
+String BaseAudioContext::state() const
 {
     // These strings had better match the strings for AudioContextState in AudioContext.idl.
     switch (m_contextState) {
     case Suspended:
         return "suspended";
     case Running:
         return "running";
     case Closed:
         return "closed";
     }
-    ASSERT_NOT_REACHED();
+    NOTREACHED();
     return "";
 }
 
-void AbstractAudioContext::setContextState(AudioContextState newState)
+void BaseAudioContext::setContextState(AudioContextState newState)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     // Validate the transitions.  The valid transitions are Suspended->Running, Running->Suspended,
     // and anything->Closed.
     switch (newState) {
     case Suspended:
-        ASSERT(m_contextState == Running);
+        DCHECK_EQ(m_contextState, Running);
         break;
     case Running:
-        ASSERT(m_contextState == Suspended);
+        DCHECK_EQ(m_contextState, Suspended);
         break;
     case Closed:
-        ASSERT(m_contextState != Closed);
+        DCHECK_NE(m_contextState, Closed);
         break;
     }
 
     if (newState == m_contextState) {
         // ASSERTs above failed; just return.
         return;
     }
 
     m_contextState = newState;
 
     // Notify context that state changed
     if (getExecutionContext())
-        getExecutionContext()->postTask(BLINK_FROM_HERE, createSameThreadTask(&AbstractAudioContext::notifyStateChange, wrapPersistent(this)));
+        getExecutionContext()->postTask(BLINK_FROM_HERE, createSameThreadTask(&BaseAudioContext::notifyStateChange, wrapPersistent(this)));
 }
 
-void AbstractAudioContext::notifyStateChange()
+void BaseAudioContext::notifyStateChange()
 {
     dispatchEvent(Event::create(EventTypeNames::statechange));
 }
 
-void AbstractAudioContext::notifySourceNodeFinishedProcessing(AudioHandler* handler)
+void BaseAudioContext::notifySourceNodeFinishedProcessing(AudioHandler* handler)
 {
-    ASSERT(isAudioThread());
+    DCHECK(isAudioThread());
     m_finishedSourceHandlers.append(handler);
 }
 
-void AbstractAudioContext::removeFinishedSourceNodes()
+void BaseAudioContext::removeFinishedSourceNodes()
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
     AutoLocker locker(this);
     // Quadratic worst case, but sizes of both vectors are considered
     // manageable, especially |m_finishedSourceNodes| is likely to be short.
     for (AudioNode* node : m_finishedSourceNodes) {
         size_t i = m_activeSourceNodes.find(node);
         if (i != kNotFound)
             m_activeSourceNodes.remove(i);
     }
     m_finishedSourceNodes.clear();
 }
 
-void AbstractAudioContext::releaseFinishedSourceNodes()
+void BaseAudioContext::releaseFinishedSourceNodes()
 {
     ASSERT(isGraphOwner());
-    ASSERT(isAudioThread());
+    DCHECK(isAudioThread());
     bool didRemove = false;
     for (AudioHandler* handler : m_finishedSourceHandlers) {
         for (AudioNode* node : m_activeSourceNodes) {
             if (m_finishedSourceNodes.contains(node))
                 continue;
             if (handler == &node->handler()) {
                 handler->breakConnection();
                 m_finishedSourceNodes.add(node);
                 didRemove = true;
                 break;
             }
         }
     }
     if (didRemove)
-        Platform::current()->mainThread()->getWebTaskRunner()->postTask(BLINK_FROM_HERE, crossThreadBind(&AbstractAudioContext::removeFinishedSourceNodes, wrapCrossThreadPersistent(this)));
+        Platform::current()->mainThread()->getWebTaskRunner()->postTask(BLINK_FROM_HERE, crossThreadBind(&BaseAudioContext::removeFinishedSourceNodes, wrapCrossThreadPersistent(this)));
 
     m_finishedSourceHandlers.clear();
 }
 
-void AbstractAudioContext::notifySourceNodeStartedProcessing(AudioNode* node)
+void BaseAudioContext::notifySourceNodeStartedProcessing(AudioNode* node)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
     AutoLocker locker(this);
 
     m_activeSourceNodes.append(node);
     node->handler().makeConnection();
 }
 
-void AbstractAudioContext::releaseActiveSourceNodes()
+void BaseAudioContext::releaseActiveSourceNodes()
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
     for (auto& sourceNode : m_activeSourceNodes)
         sourceNode->handler().breakConnection();
 
     m_activeSourceNodes.clear();
 }
 
-void AbstractAudioContext::handleStoppableSourceNodes()
+void BaseAudioContext::handleStoppableSourceNodes()
 {
     ASSERT(isGraphOwner());
 
     // Find AudioBufferSourceNodes to see if we can stop playing them.
     for (AudioNode* node : m_activeSourceNodes) {
         // If the AudioNode has been marked as finished and released by
         // the audio thread, but not yet removed by the main thread
         // (see releaseActiveSourceNodes() above), |node| must not be
         // touched as its handler may have been released already.
         if (m_finishedSourceNodes.contains(node))
             continue;
         if (node->handler().getNodeType() == AudioHandler::NodeTypeAudioBufferSource) {
             AudioBufferSourceNode* sourceNode = static_cast<AudioBufferSourceNode*>(node);
             sourceNode->audioBufferSourceHandler().handleStoppableSourceNode();
         }
     }
 }
 
-void AbstractAudioContext::handlePreRenderTasks()
+void BaseAudioContext::handlePreRenderTasks()
 {
-    ASSERT(isAudioThread());
+    DCHECK(isAudioThread());
 
     // At the beginning of every render quantum, try to update the internal rendering graph state (from main thread changes).
     // It's OK if the tryLock() fails, we'll just take slightly longer to pick up the changes.
     if (tryLock()) {
         deferredTaskHandler().handleDeferredTasks();
 
         resolvePromisesForResume();
 
         // Check to see if source nodes can be stopped because the end time has passed.
         handleStoppableSourceNodes();
 
         // Update the dirty state of the listener.
         listener()->updateState();
 
         unlock();
     }
 }
 
-void AbstractAudioContext::handlePostRenderTasks()
+void BaseAudioContext::handlePostRenderTasks()
 {
-    ASSERT(isAudioThread());
+    DCHECK(isAudioThread());
 
     // Must use a tryLock() here too.  Don't worry, the lock will very rarely be contended and this method is called frequently.
     // The worst that can happen is that there will be some nodes which will take slightly longer than usual to be deleted or removed
     // from the render graph (in which case they'll render silence).
     if (tryLock()) {
         // Take care of AudioNode tasks where the tryLock() failed previously.
         deferredTaskHandler().breakConnections();
 
         // Dynamically clean up nodes which are no longer needed.
         releaseFinishedSourceNodes();
 
         deferredTaskHandler().handleDeferredTasks();
         deferredTaskHandler().requestToDeleteHandlersOnMainThread();
 
         unlock();
     }
 }
 
-void AbstractAudioContext::resolvePromisesForResumeOnMainThread()
+void BaseAudioContext::resolvePromisesForResumeOnMainThread()
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
     AutoLocker locker(this);
 
     for (auto& resolver : m_resumeResolvers) {
         if (m_contextState == Closed) {
             resolver->reject(
                 DOMException::create(InvalidStateError, "Cannot resume a context that has been closed"));
         } else {
             resolver->resolve();
         }
     }
 
     m_resumeResolvers.clear();
     m_isResolvingResumePromises = false;
 }
 
-void AbstractAudioContext::resolvePromisesForResume()
+void BaseAudioContext::resolvePromisesForResume()
 {
-    // This runs inside the AbstractAudioContext's lock when handling pre-render tasks.
-    ASSERT(isAudioThread());
+    // This runs inside the BaseAudioContext's lock when handling pre-render tasks.
+    DCHECK(isAudioThread());
     ASSERT(isGraphOwner());
 
     // Resolve any pending promises created by resume(). Only do this if we haven't already started
     // resolving these promises. This gets called very often and it takes some time to resolve the
     // promises in the main thread.
     if (!m_isResolvingResumePromises && m_resumeResolvers.size() > 0) {
         m_isResolvingResumePromises = true;
-        Platform::current()->mainThread()->getWebTaskRunner()->postTask(BLINK_FROM_HERE, crossThreadBind(&AbstractAudioContext::resolvePromisesForResumeOnMainThread, wrapCrossThreadPersistent(this)));
+        Platform::current()->mainThread()->getWebTaskRunner()->postTask(BLINK_FROM_HERE, crossThreadBind(&BaseAudioContext::resolvePromisesForResumeOnMainThread, wrapCrossThreadPersistent(this)));
     }
 }
 
-void AbstractAudioContext::rejectPendingDecodeAudioDataResolvers()
+void BaseAudioContext::rejectPendingDecodeAudioDataResolvers()
 {
     // Now reject any pending decodeAudioData resolvers
     for (auto& resolver : m_decodeAudioResolvers)
         resolver->reject(DOMException::create(InvalidStateError, "Audio context is going away"));
     m_decodeAudioResolvers.clear();
 }
 
-void AbstractAudioContext::rejectPendingResolvers()
+void BaseAudioContext::rejectPendingResolvers()
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     // Audio context is closing down so reject any resume promises that are still pending.
 
     for (auto& resolver : m_resumeResolvers) {
         resolver->reject(DOMException::create(InvalidStateError, "Audio context is going away"));
     }
     m_resumeResolvers.clear();
     m_isResolvingResumePromises = false;
 
     rejectPendingDecodeAudioDataResolvers();
 }
 
-const AtomicString& AbstractAudioContext::interfaceName() const
+const AtomicString& BaseAudioContext::interfaceName() const
 {
     return EventTargetNames::AudioContext;
 }
 
-ExecutionContext* AbstractAudioContext::getExecutionContext() const
+ExecutionContext* BaseAudioContext::getExecutionContext() const
 {
     return ActiveDOMObject::getExecutionContext();
 }
 
-void AbstractAudioContext::startRendering()
+void BaseAudioContext::startRendering()
 {
     // This is called for both online and offline contexts.
-    ASSERT(isMainThread());
-    ASSERT(m_destinationNode);
+    DCHECK(isMainThread());
+    DCHECK(m_destinationNode);
 
     recordUserGestureState();
 
     if (m_contextState == Suspended) {
         destination()->audioDestinationHandler().startRendering();
         setContextState(Running);
     }
 }
 
-DEFINE_TRACE(AbstractAudioContext)
+DEFINE_TRACE(BaseAudioContext)
 {
     visitor->trace(m_destinationNode);
     visitor->trace(m_listener);
     visitor->trace(m_activeSourceNodes);
     visitor->trace(m_resumeResolvers);
     visitor->trace(m_decodeAudioResolvers);
 
     visitor->trace(m_periodicWaveSine);
     visitor->trace(m_periodicWaveSquare);
     visitor->trace(m_periodicWaveSawtooth);
     visitor->trace(m_periodicWaveTriangle);
     EventTargetWithInlineData::trace(visitor);
     ActiveDOMObject::trace(visitor);
 }
 
-SecurityOrigin* AbstractAudioContext::getSecurityOrigin() const
+SecurityOrigin* BaseAudioContext::getSecurityOrigin() const
 {
     if (getExecutionContext())
         return getExecutionContext()->getSecurityOrigin();
 
     return nullptr;
 }
 
 } // namespace blink