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{
  "commit": "961c4894dcf582649a944560c413e1aa682c94b6",
  "tree": "70dabca2c69517bd0356a3f6231c02a267157ab7",
  "parents": [
    "3a294293ca863ead143a240463e36d7aa326f852"
  ],
  "author": {
    "name": "Zimuzo Ezeozue",
    "email": "zezeozue@google.com",
    "time": "Tue Jun 16 23:03:01 2026 +0000"
  },
  "committer": {
    "name": "Zimuzo Ezeozue",
    "email": "zezeozue@google.com",
    "time": "Wed Jun 17 00:06:19 2026 +0100"
  },
  "message": "ui: Heap Dump Explorer flamegraph diff with pprof-style coloring\n\nAdd baseline / diff mode to the Heap Dump Explorer. Load a second trace (or\npick a second dump from the same trace) as a baseline and compare it against\nthe current dump across every tab:\n\n- Overview diff, and a Flamegraph diff coloured pprof-style on the signed,\n  normalised delta (green \u003d smaller, grey \u003d unchanged, red \u003d larger; absolute\n  or relative basis per metric) with a matching legend.\n- Diff grids for Classes, Objects, Dominators, Bitmaps, Strings and Arrays,\n  plus a per-object diff view.\n- A top-bar RadioGroup toggles Diff / Current / Baseline.\n\nSame-trace diffs run as a single SQL JOIN against android_heap_graph_*;\ncross-trace diffs pair objects in JS across the two trace_processor engines\n(NUL-free dense path ids, so the keys are portable to the native engine) and\nwrite the paired rows back into the current engine. Pooled baseline engines\nare torn down via the trace\u0027s trash on close.\n\nRebased onto current upstream/main, which moved the explorer onto a\nstore-backed session with a persisted_state permalink model after this work\nwas first written. The diff state is re-ported onto that model: object tabs\nserialize their (currentId, baselineId) pair, the page keeps a content-keyed\ntab map plus an (engine, filter)-keyed overview cache for the baseline and\ncurrent sides, and all page-level caches reset per trace load. Adds a\npersisted_state round-trip unit test and fixes stale mode-toggle selectors in\nthe e2e tests (the widget is a RadioGroup, not SegmentedButtons).\n",
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