Remove preload support from the MemoryCache

sky/engine/core/fetch/MemoryCache.cpp

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller (mueller@kde.org)
     Copyright (C) 2002 Waldo Bastian (bastian@kde.org)
     Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
@@ skipping 247 matching lines @@
     // See if we have any purged resources we can evict.
     for (int i = 0; i < size; i++) {
         MemoryCacheEntry* current = m_allResources[i].m_tail;
         while (current) {
             MemoryCacheEntry* previous = current->m_previousInAllResourcesList;
             // Main Resources in the cache are only substitue data that was
             // precached and should not be evicted.
             if (current->m_resource->wasPurged() && current->m_resource->canDelete()
                 && current->m_resource->type() != Resource::MainResource) {
                 ASSERT(!current->m_resource->hasClients());
-                ASSERT(!current->m_resource->isPreloaded());
                 bool wasEvicted = evict(current);
                 ASSERT_UNUSED(wasEvicted, wasEvicted);
             }
             current = previous;
         }
     }
     if (targetSize && m_deadSize <= targetSize)
         return;
 
     bool canShrinkLRULists = true;
     for (int i = size - 1; i >= 0; i--) {
         // Remove from the tail, since this is the least frequently accessed of the objects.
         MemoryCacheEntry* current = m_allResources[i].m_tail;
 
         // First flush all the decoded data in this queue.
         while (current) {
             // Protect 'previous' so it can't get deleted during destroyDecodedData().
             MemoryCacheEntry* previous = current->m_previousInAllResourcesList;
             ASSERT(!previous || contains(previous->m_resource.get()));
-            if (!current->m_resource->hasClients() && !current->m_resource->isPreloaded() && current->m_resource->isLoaded()) {
+            if (!current->m_resource->hasClients() && current->m_resource->isLoaded()) {
                 // Destroy our decoded data. This will remove us from
                 // m_liveDecodedResources, and possibly move us to a different
                 // LRU list in m_allResources.
                 current->m_resource->prune();
 
                 if (targetSize && m_deadSize <= targetSize)
                     return;
             }
             // Decoded data may reference other resources. Stop iterating if 'previous' somehow got
             // kicked out of cache during destroyDecodedData().
             if (previous && !contains(previous->m_resource.get()))
                 break;
             current = previous;
         }
 
         // Now evict objects from this queue.
         current = m_allResources[i].m_tail;
         while (current) {
             MemoryCacheEntry* previous = current->m_previousInAllResourcesList;
             ASSERT(!previous || contains(previous->m_resource.get()));
-            if (!current->m_resource->hasClients() && !current->m_resource->isPreloaded()
+            if (!current->m_resource->hasClients()
                 && !current->m_resource->isCacheValidator() && current->m_resource->canDelete()
                 && current->m_resource->type() != Resource::MainResource) {
                 // Main Resources in the cache are only substitue data that was
                 // precached and should not be evicted.
                 bool wasEvicted = evict(current);
                 ASSERT_UNUSED(wasEvicted, wasEvicted);
                 if (targetSize && m_deadSize <= targetSize)
                     return;
             }
             if (previous && !contains(previous->m_resource.get()))
@@ skipping 426 matching lines @@
                 printf("(%.1fK, %.1fK, %uA, %dR, %d, %d); ", current->decodedSize() / 1024.0f, (current->encodedSize() + current->overheadSize()) / 1024.0f, current->accessCount(), current->hasClients(), current->isPurgeable(), current->wasPurged());
 
             current = prev;
         }
     }
 }
 
 #endif // MEMORY_CACHE_STATS
 
 } // namespace blink