Makes RenderFrameObserver/RenderViewObserver::OnDestruct pure virtual.

content/renderer/media/cdm/renderer_cdm_manager.cc

 // Copyright 2014 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.
 
 #include "content/renderer/media/cdm/renderer_cdm_manager.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/stl_util.h"
@@ skipping 32 matching lines @@
                         OnSessionExpirationUpdate)
     IPC_MESSAGE_HANDLER(CdmMsg_ResolvePromise, OnPromiseResolved)
     IPC_MESSAGE_HANDLER(CdmMsg_ResolvePromiseWithSession,
                         OnPromiseResolvedWithSession)
     IPC_MESSAGE_HANDLER(CdmMsg_RejectPromise, OnPromiseRejected)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
+void RendererCdmManager::OnDestruct() {
+  delete this;
+}
+
 void RendererCdmManager::InitializeCdm(int cdm_id,
                                        uint32_t promise_id,
                                        ProxyMediaKeys* media_keys,
                                        const std::string& key_system,
                                        const GURL& security_origin,
                                        bool use_hw_secure_codecs) {
   DCHECK(GetMediaKeys(cdm_id)) << "|cdm_id| not registered.";
   CdmHostMsg_InitializeCdm_Params params;
   params.key_system = key_system;
   params.security_origin = security_origin;
@@ skipping 176 matching lines @@
   proxy_media_keys_map_.erase(cdm_id);
 }
 
 ProxyMediaKeys* RendererCdmManager::GetMediaKeys(int cdm_id) {
   std::map<int, ProxyMediaKeys*>::iterator iter =
       proxy_media_keys_map_.find(cdm_id);
   return (iter != proxy_media_keys_map_.end()) ? iter->second : NULL;
 }
 
 }  // namespace content