[tracing] Fix light dump of partition alloc dump provider

third_party/WebKit/Source/wtf/allocator/PartitionAlloc.cpp

 /*
  * 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 1342 matching lines @@
             partitionStats.totalActiveBytes += bucketStats[i].activeBytes;
             partitionStats.totalDecommittableBytes += bucketStats[i].decommittableBytes;
             partitionStats.totalDiscardableBytes += bucketStats[i].discardableBytes;
             if (!isLightDump)
                 partitionStatsDumper->partitionsDumpBucketStats(partitionName, &bucketStats[i]);
         }
     }
 
     size_t directMappedAllocationsTotalSize = 0;
     for (size_t i = 0; i < numDirectMappedAllocations; ++i) {
+        uint32_t size = directMapLengths[i];
+        directMappedAllocationsTotalSize += size;
+        if (isLightDump)
+            continue;
+
         PartitionBucketMemoryStats stats;
         memset(&stats, '\0', sizeof(stats));
         stats.isValid = true;
         stats.isDirectMap = true;
         stats.numFullPages = 1;
-        uint32_t size = directMapLengths[i];
         stats.allocatedPageSize = size;
         stats.bucketSlotSize = size;
         stats.activeBytes = size;
         stats.residentBytes = size;
-        directMappedAllocationsTotalSize += size;
         partitionStatsDumper->partitionsDumpBucketStats(partitionName, &stats);
     }
     partitionStats.totalResidentBytes += directMappedAllocationsTotalSize;
     partitionStats.totalActiveBytes += directMappedAllocationsTotalSize;
     partitionStatsDumper->partitionDumpTotals(partitionName, &partitionStats);
 }
 
 void partitionDumpStats(PartitionRoot* partition, const char* partitionName, bool isLightDump, PartitionStatsDumper* partitionStatsDumper)
 {
     static const size_t kMaxReportableBuckets = 4096 / sizeof(void*);
@@ skipping 18 matching lines @@
             partitionStats.totalDiscardableBytes += memoryStats[i].discardableBytes;
             if (!isLightDump)
                 partitionStatsDumper->partitionsDumpBucketStats(partitionName, &memoryStats[i]);
         }
     }
     partitionStatsDumper->partitionDumpTotals(partitionName, &partitionStats);
 }
 
 } // namespace WTF