Revert of MediaStreamSource: verify unlocked state when finalizing.

third_party/WebKit/Source/platform/mediastream/MediaStreamSource.cpp

Index: third_party/WebKit/Source/platform/mediastream/MediaStreamSource.cpp
diff --git a/third_party/WebKit/Source/platform/mediastream/MediaStreamSource.cpp b/third_party/WebKit/Source/platform/mediastream/MediaStreamSource.cpp
index da4b301ee37423105f552f9fc934d130b04c7792..79485a8d4989a5457b2b396d089fd757a61b617a 100644
--- a/third_party/WebKit/Source/platform/mediastream/MediaStreamSource.cpp
+++ b/third_party/WebKit/Source/platform/mediastream/MediaStreamSource.cpp
@@ -51,13 +51,6 @@ MediaStreamSource::MediaStreamSource(const String& id,
       m_readyState(readyState),
       m_requiresConsumer(requiresConsumer) {}
 
-MediaStreamSource::~MediaStreamSource() {
-  // Verify that the audio thread isn't consuming audio.
-  // TODO(sof): remove once crbug.com/682945 has been diagnosed.
-  MutexTryLocker tryLocker(m_audioConsumersLock);
-  CHECK(tryLocker.locked());
-}
-
 void MediaStreamSource::setReadyState(ReadyState readyState) {
   if (m_readyState != ReadyStateEnded && m_readyState != readyState) {
     m_readyState = readyState;