increase resource image-cache size to test perf

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
 
 #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     (2 * 1024 * 1024)
+    #define SK_DEFAULT_IMAGE_CACHE_LIMIT     (32 * 1024 * 1024)
 #endif
 
 void SkResourceCache::Key::init(void* nameSpace, uint64_t sharedID, size_t length) {
     SkASSERT(SkAlign4(length) == length);
 
     // fCount32 and fHash are not hashed
     static const int kUnhashedLocal32s = 2; // fCache32 + fHash
     static const int kSharedIDLocal32s = 2; // fSharedID_lo + fSharedID_hi
     static const int kHashedLocal32s = kSharedIDLocal32s + (sizeof(fNamespace) >> 2);
     static const int kLocal32s = kUnhashedLocal32s + kHashedLocal32s;
@@ skipping 641 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);
 }