Add GlyphMetricsMap memory consumption to memory-infra tracing

third_party/WebKit/Source/platform/fonts/FontDataCache.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 18 matching lines @@
  */
 
 #ifndef FontDataCache_h
 #define FontDataCache_h
 
 #include "platform/fonts/FontCache.h"
 #include "platform/fonts/FontPlatformData.h"
 #include "wtf/HashMap.h"
 #include "wtf/ListHashSet.h"
 
+namespace base {
+namespace trace_event {
+class ProcessMemoryDump;
+}
+}
+
+
 namespace blink {
 
 class SimpleFontData;
 
 struct FontDataCacheKeyHash {
     STATIC_ONLY(FontDataCacheKeyHash);
     static unsigned hash(const FontPlatformData* platformData)
     {
         return platformData->hash();
     }
@@ skipping 29 matching lines @@
     void release(const SimpleFontData*);
 
     // This is used by FontVerticalDataCache to mark all items with vertical data
     // that are currently in cache as "in cache", which is later used to sweep the FontVerticalDataCache.
     void markAllVerticalData();
 
     // Purges items in FontDataCache according to provided severity.
     // Returns true if any removal of cache items actually occurred.
     bool purge(PurgeSeverity);
 
+    void dumpCountAndGlyphToBoundsMaps(base::trace_event::ProcessMemoryDump*);
+
 private:
     bool purgeLeastRecentlyUsed(int count);
 
     typedef HashMap<const FontPlatformData*, std::pair<RefPtr<SimpleFontData>, unsigned>, FontDataCacheKeyHash> Cache;
     Cache m_cache;
     ListHashSet<RefPtr<SimpleFontData>> m_inactiveFontData;
 };
 
 } // namespace blink
 
 #endif