Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/core/html/AutoplayExperimentHelper.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 AutoplayExperimentHelper_h
 #define AutoplayExperimentHelper_h
 
 #include "core/page/Page.h"
 #include "platform/Timer.h"
 #include "platform/geometry/IntRect.h"
@@ skipping 136 matching lines @@
 
     HTMLMediaElement& element() const;
 
     inline bool enabled(Mode mode) const
     {
         return ((int)m_mode) & ((int)mode);
     }
 
     Mode fromString(const String& mode);
 
-    RawPtrWillBeMember<HTMLMediaElement> m_element;
+    Member<HTMLMediaElement> m_element;
 
     Mode m_mode;
 
     // Autoplay experiment state.
     // True if we've received a play() without a pause().
     bool m_playPending : 1;
 
     // Are we registered with the view for position updates?
     bool m_registeredWithLayoutObject : 1;
 
@@ skipping 14 matching lines @@
     const AutoplayExperimentHelper::Mode& b)
 {
     a = static_cast<AutoplayExperimentHelper::Mode>(static_cast<int>(a) | static_cast<int>(b));
     return a;
 }
 
 
 } // namespace blink
 
 #endif // AutoplayExperimentHelper_h