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yurys@chromium.org authored
- HeapSnapshotNode, HeapSnapshotEdge and HeapSnapshotRetainerEdge now store only reference to HeapSnapshot and global index of corresponding item. - all index boundaries were moved out of these classes into corresponding iterators BUG=None Review URL: https://codereview.chromium.org/207523004 git-svn-id: svn://svn.chromium.org/blink/trunk@169732 bbb929c8-8fbe-4397-9dbb-9b2b20218538
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