Fix template angle bracket syntax in platform

Source/platform/mediastream/MediaStreamSource.cpp

Index: Source/platform/mediastream/MediaStreamSource.cpp
diff --git a/Source/platform/mediastream/MediaStreamSource.cpp b/Source/platform/mediastream/MediaStreamSource.cpp
index 80b2a5b1275ffc53919e2a7bf0a8df2f643ea75c..f03a996183f450ece8d3b3a900a4892afde9c4bf 100644
--- a/Source/platform/mediastream/MediaStreamSource.cpp
+++ b/Source/platform/mediastream/MediaStreamSource.cpp
@@ -82,7 +82,7 @@ bool MediaStreamSource::removeAudioConsumer(AudioDestinationConsumer* consumer)
 {
     ASSERT(m_requiresConsumer);
     MutexLocker locker(m_audioConsumersLock);
-    HeapHashSet<Member<AudioDestinationConsumer> >::iterator it = m_audioConsumers.find(consumer);
+    HeapHashSet<Member<AudioDestinationConsumer>>::iterator it = m_audioConsumers.find(consumer);
     if (it == m_audioConsumers.end())
         return false;
     m_audioConsumers.remove(it);
@@ -93,7 +93,7 @@ void MediaStreamSource::setAudioFormat(size_t numberOfChannels, float sampleRate
 {
     ASSERT(m_requiresConsumer);
     MutexLocker locker(m_audioConsumersLock);
-    for (HeapHashSet<Member<AudioDestinationConsumer> >::iterator it = m_audioConsumers.begin(); it != m_audioConsumers.end(); ++it)
+    for (HeapHashSet<Member<AudioDestinationConsumer>>::iterator it = m_audioConsumers.begin(); it != m_audioConsumers.end(); ++it)
         (*it)->setFormat(numberOfChannels, sampleRate);
 }
 
@@ -101,7 +101,7 @@ void MediaStreamSource::consumeAudio(AudioBus* bus, size_t numberOfFrames)
 {
     ASSERT(m_requiresConsumer);
     MutexLocker locker(m_audioConsumersLock);
-    for (HeapHashSet<Member<AudioDestinationConsumer> >::iterator it = m_audioConsumers.begin(); it != m_audioConsumers.end(); ++it)
+    for (HeapHashSet<Member<AudioDestinationConsumer>>::iterator it = m_audioConsumers.begin(); it != m_audioConsumers.end(); ++it)
         (*it)->consumeAudio(bus, numberOfFrames);
 }