[tracing] Add support for skia caches to dump memory stats

include/core/SkGraphics.h

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkGraphics_DEFINED
 #define SkGraphics_DEFINED
 
 #include "SkTypes.h"
 
 class SkData;
 class SkImageGenerator;
+class SkTraceMemoryDump;
 
 class SK_API SkGraphics {
 public:
     /**
      *  Call this at process initialization time if your environment does not
      *  permit static global initializers that execute code.
      *  Init() is thread-safe and idempotent.
      */
     static void Init();
 
@@ skipping 83 matching lines @@
      *  can cause most/all of the existing entries to be purged. To avoid the, the client can set
      *  a limit for a single allocation. If a cacheable entry would have been cached, but its size
      *  exceeds this limit, then we do not attempt to cache it at all.
      *
      *  Zero is the default value, meaning we always attempt to cache entries.
      */
     static size_t GetResourceCacheSingleAllocationByteLimit();
     static size_t SetResourceCacheSingleAllocationByteLimit(size_t newLimit);
 
     /**
+     *  Dumps memory usage of caches using the SkTraceMemoryDump interface. See SkTraceMemoryDump
+     *  for usage of this method.
+     */
+    static void DumpMemoryStatistics(SkTraceMemoryDump* dump);
+
+    /**
      *  Applications with command line options may pass optional state, such
      *  as cache sizes, here, for instance:
      *  font-cache-limit=12345678
      *
      *  The flags format is name=value[;name=value...] with no spaces.
      *  This format is subject to change.
      */
     static void SetFlags(const char* flags);
 
     /**
@@ skipping 33 matching lines @@
 public:
     SkAutoGraphics() {
         SkGraphics::Init();
     }
     ~SkAutoGraphics() {
         SkGraphics::Term();
     }
 };
 
 #endif