[part 1] Make classes and structures in modules/ fast-allocated.

Source/modules/audio_output_devices/HTMLMediaElementAudioOutputDevice.h

Index: Source/modules/audio_output_devices/HTMLMediaElementAudioOutputDevice.h
diff --git a/Source/modules/audio_output_devices/HTMLMediaElementAudioOutputDevice.h b/Source/modules/audio_output_devices/HTMLMediaElementAudioOutputDevice.h
index b9c5fa9cd1b98675f74dbeb26e2df5cb9f4db451..a6a599f839397b13b3b1688631694f1edf775bb5 100644
--- a/Source/modules/audio_output_devices/HTMLMediaElementAudioOutputDevice.h
+++ b/Source/modules/audio_output_devices/HTMLMediaElementAudioOutputDevice.h
@@ -19,6 +19,7 @@ class ScriptState;
 
 class HTMLMediaElementAudioOutputDevice final : public NoBaseWillBeGarbageCollectedFinalized<HTMLMediaElementAudioOutputDevice>, public WillBeHeapSupplement<HTMLMediaElement> {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(HTMLMediaElementAudioOutputDevice);
+    WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(HTMLMediaElementAudioOutputDevice);
 public:
     DECLARE_VIRTUAL_TRACE();
     static String sinkId(HTMLMediaElement&);