Remove virtual destructors for several platform support classes

Source/core/platform/chromium/support/WebRTCICECandidate.cpp

Index: Source/core/platform/chromium/support/WebRTCICECandidate.cpp
diff --git a/Source/core/platform/chromium/support/WebRTCICECandidate.cpp b/Source/core/platform/chromium/support/WebRTCICECandidate.cpp
index 755e94106969aaa417e166334f884cb96e68ce19..477d9fc20dcac5958ffa83824de47b3a7a6cfa3d 100644
--- a/Source/core/platform/chromium/support/WebRTCICECandidate.cpp
+++ b/Source/core/platform/chromium/support/WebRTCICECandidate.cpp
@@ -44,7 +44,6 @@ public:
     {
         return adoptRef(new WebRTCICECandidatePrivate(candidate, sdpMid, sdpMLineIndex));
     }
-    virtual ~WebRTCICECandidatePrivate();
 
     const WebString& candidate() const { return m_candidate; }
     const WebString& sdpMid() const { return m_sdpMid; }
@@ -65,10 +64,6 @@ WebRTCICECandidatePrivate::WebRTCICECandidatePrivate(const WebString& candidate,
 {
 }
 
-WebRTCICECandidatePrivate::~WebRTCICECandidatePrivate()
-{
-}
-
 void WebRTCICECandidate::assign(const WebRTCICECandidate& other)
 {
     m_private = other.m_private;