Remove use of wtf/ListHashSet from CCPrioritizedTextureManager.

cc/prioritized_texture.cc

 // Copyright 2012 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 "CCPrioritizedTexture.h"
 
 #include "CCPrioritizedTextureManager.h"
 #include "CCPriorityCalculator.h"
@@ skipping 147 matching lines @@
 }
 
 bool CCPrioritizedTexture::Backing::resourceHasBeenDeleted() const
 {
     ASSERT(CCProxy::isImplThread());
     return m_resourceHasBeenDeleted;
 }
 
 bool CCPrioritizedTexture::Backing::canBeRecycled() const
 {
-    ASSERT(CCProxy::isImplThread() && CCProxy::isMainThreadBlocked());
+    ASSERT(CCProxy::isImplThread());
     return !m_wasAbovePriorityCutoffAtLastPriorityUpdate && !m_inDrawingImplTree;
 }
 
 void CCPrioritizedTexture::Backing::updatePriority()
 {
     ASSERT(CCProxy::isImplThread() && CCProxy::isMainThreadBlocked());
     if (m_owner) {
         m_priorityAtLastPriorityUpdate = m_owner->requestPriority();
         m_wasAbovePriorityCutoffAtLastPriorityUpdate = m_owner->isAbovePriorityCutoff();
     } else {
         m_priorityAtLastPriorityUpdate = CCPriorityCalculator::lowestPriority();
         m_wasAbovePriorityCutoffAtLastPriorityUpdate = false;
     }
 }
 
 void CCPrioritizedTexture::Backing::updateInDrawingImplTree()
 {
     ASSERT(CCProxy::isImplThread() && CCProxy::isMainThreadBlocked());
     m_inDrawingImplTree = !!owner();
     if (!m_inDrawingImplTree)
         ASSERT(m_priorityAtLastPriorityUpdate == CCPriorityCalculator::lowestPriority());
 }
 
 } // namespace cc