Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/modules/webusb/USBDevice.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef USBDevice_h
 #define USBDevice_h
 
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "bindings/modules/v8/UnionTypesModules.h"
 #include "core/dom/ContextLifecycleObserver.h"
 #include "platform/heap/Handle.h"
 #include "public/platform/modules/webusb/WebUSBDevice.h"
 #include "public/platform/modules/webusb/WebUSBDeviceInfo.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 class ScriptPromiseResolver;
 class ScriptState;
 class USBConfiguration;
 class USBControlTransferParameters;
 
 class USBDevice
     : public GarbageCollectedFinalized<USBDevice>
     , public ContextLifecycleObserver
     , public ScriptWrappable {
-    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(USBDevice);
+    USING_GARBAGE_COLLECTED_MIXIN(USBDevice);
     DEFINE_WRAPPERTYPEINFO();
 public:
     using WebType = OwnPtr<WebUSBDevice>;
 
     static USBDevice* create(PassOwnPtr<WebUSBDevice> device)
     {
         return new USBDevice(device);
     }
 
     static USBDevice* take(ScriptPromiseResolver*, PassOwnPtr<WebUSBDevice> device)
@@ skipping 49 matching lines @@
 
     DECLARE_TRACE();
 
 private:
     OwnPtr<WebUSBDevice> m_device;
 };
 
 } // namespace blink
 
 #endif // USBDevice_h