Handle ASR stream disconnection in OnDeviceModel service [chromium/src : main]

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Evan Liu (Gerrit)

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Aug 14, 2026, 4:14:45 PM (2 days ago) Aug 14
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Change information

Commit message:
Handle ASR stream disconnection in OnDeviceModel service

This CL makes several improvements to ASR streaming in OnDeviceModelMojomImpl:
1. Adds a disconnect handler to AsrStreamWrapper so that when an AsrStreamInput pipe disconnects, the SessionWrapper is notified to clean up backend model sessions and reclaim resources.

2. Removes the DCHECK
asserting asr_session_ is null in AsrStreamInternal to allow an existing SessionWrapper to be safely reused across subsequent or restarted ASR audio streams.
Bug: 545294347
Change-Id: I58cadcade7b03589f6ed03338cf942b2657f8891
Reviewed-by: Steven Holte <ho...@chromium.org>
Commit-Queue: Evan Liu <ev...@google.com>
Cr-Commit-Position: refs/heads/main@{#1680010}
Files:
  • M services/on_device_model/ml/on_device_model_executor.cc
  • M services/on_device_model/ml/session_accessor.cc
  • M services/on_device_model/on_device_model_mojom_impl.cc
  • M services/on_device_model/on_device_model_mojom_impl.h
  • M services/on_device_model/on_device_model_service_unittest.cc
Change size: M
Delta: 5 files changed, 141 insertions(+), 11 deletions(-)
Branch: refs/heads/main
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