Fix template angle bracket syntax in platform

Source/platform/exported/WebMediaStreamSource.cpp

Index: Source/platform/exported/WebMediaStreamSource.cpp
diff --git a/Source/platform/exported/WebMediaStreamSource.cpp b/Source/platform/exported/WebMediaStreamSource.cpp
index fb2422a920c4e905273acda4e64e1a1f8a391c4c..b130dd87065e3c87eefdd053e09ac4ed7bd14e40 100644
--- a/Source/platform/exported/WebMediaStreamSource.cpp
+++ b/Source/platform/exported/WebMediaStreamSource.cpp
@@ -222,8 +222,8 @@ bool WebMediaStreamSource::removeAudioConsumer(WebAudioDestinationConsumer* cons
     ASSERT(isMainThread());
     ASSERT(!m_private.isNull() && consumer);
 
-    const HeapHashSet<Member<AudioDestinationConsumer> >& consumers = m_private->audioConsumers();
-    for (HeapHashSet<Member<AudioDestinationConsumer> >::const_iterator it = consumers.begin(); it != consumers.end(); ++it) {
+    const HeapHashSet<Member<AudioDestinationConsumer>>& consumers = m_private->audioConsumers();
+    for (HeapHashSet<Member<AudioDestinationConsumer>>::const_iterator it = consumers.begin(); it != consumers.end(); ++it) {
         ConsumerWrapper* wrapper = static_cast<ConsumerWrapper*>(it->get());
         if (wrapper->consumer() == consumer) {
             m_private->removeAudioConsumer(wrapper);