Oilpan: Remove OffHeapCollectionTrait

Source/modules/encryptedmedia/MediaKeySystemAccess.cpp

 // 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 "config.h"
 #include "modules/encryptedmedia/MediaKeySystemAccess.h"
 
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "core/dom/DOMException.h"
@@ skipping 55 matching lines @@
 // NavigatorRequestMediaKeySystemAccess.
 static Vector<String> convertInitDataTypes(const WebVector<WebEncryptedMediaInitDataType>& initDataTypes)
 {
     Vector<String> result;
     result.reserveCapacity(initDataTypes.size());
     for (size_t i = 0; i < initDataTypes.size(); i++)
         result.append(EncryptedMediaUtils::convertFromInitDataType(initDataTypes[i]));
     return result;
 }
 
-static Vector<MediaKeySystemMediaCapability> convertCapabilities(const WebVector<WebMediaKeySystemMediaCapability>& capabilities)
+static HeapVector<MediaKeySystemMediaCapability> convertCapabilities(const WebVector<WebMediaKeySystemMediaCapability>& capabilities)
 {
-    Vector<MediaKeySystemMediaCapability> result;
+    HeapVector<MediaKeySystemMediaCapability> result;
     result.reserveCapacity(capabilities.size());
     for (size_t i = 0; i < capabilities.size(); i++) {
         MediaKeySystemMediaCapability capability;
         capability.setContentType(capabilities[i].contentType);
         capability.setRobustness(capabilities[i].robustness);
         result.append(capability);
     }
     return result;
 }
 
@@ skipping 79 matching lines @@
 
     // 3. Return promise.
     return promise;
 }
 
 DEFINE_TRACE(MediaKeySystemAccess)
 {
 }
 
 } // namespace blink