use allocator (if present) when we allocate our cache bitmap

src/core/SkResourceCache.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkChecksum.h"
 #include "SkMessageBus.h"
 #include "SkMipMap.h"
 #include "SkMutex.h"
 #include "SkPixelRef.h"
 #include "SkResourceCache.h"
 #include "SkTraceMemoryDump.h"
 
 #include <stddef.h>
 #include <stdlib.h>
 
 DECLARE_SKMESSAGEBUS_MESSAGE(SkResourceCache::PurgeSharedIDMessage)
 
 // This can be defined by the caller's build system
-//#define SK_USE_DISCARDABLE_SCALEDIMAGECACHE
+#define SK_USE_DISCARDABLE_SCALEDIMAGECACHE

[tomhudson, 2015/09/17 18:58:07]

Don't you want to comment this back out? Or is it the new default for Skia?

[reed1, 2015/09/17 19:57:23]

Done.

 
 #ifndef SK_DISCARDABLEMEMORY_SCALEDIMAGECACHE_COUNT_LIMIT
 #   define SK_DISCARDABLEMEMORY_SCALEDIMAGECACHE_COUNT_LIMIT   1024
 #endif
 
 #ifndef SK_DEFAULT_IMAGE_CACHE_LIMIT
     #define SK_DEFAULT_IMAGE_CACHE_LIMIT     (32 * 1024 * 1024)
 #endif
 
 void SkResourceCache::Key::init(void* nameSpace, uint64_t sharedID, size_t length) {
@@ skipping 648 matching lines @@
         dump->setDiscardableMemoryBacking(dump_name.c_str(), *discardable);
     } else {
         dump->dumpNumericValue(dump_name.c_str(), "size", "bytes", rec.bytesUsed());
         dump->setMemoryBacking(dump_name.c_str(), "malloc", nullptr);
     }
 }
 
 void SkResourceCache::DumpMemoryStatistics(SkTraceMemoryDump* dump) {
     VisitAll(sk_trace_dump_visitor, dump);
 }