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Mikihito Matsuura da20bfc1dd Revert "Add timing histograms and trace events to sql database ops"
This reverts commit 0fae0abfd2.

Reason for revert: Race access to base::ScopedMockElapsedTimersForTest
https://ci.chromium.org/ui/p/chromium/builders/ci/Linux%20TSan%20Tests/92754/overview

Original change's description:
> Add timing histograms and trace events to sql database ops
>
> This CL adds a few histograms:
> - Sql.Statement.StepTime.{DatabaseTag}: time spent in each
>   single `Step()` call
> - Sql.Statement.ExecutionTime.{DatabaseTag}: total time
>   spent in `Step()` within the lifetime of each statement
> - Sql.Database.Success.OpenInternalTime.{DatabaseTag}: time
>   spent in `Database::OpenInternal()`
> - Sql.Database.Success.SqliteOpenTime.{DatabaseTag}: time taken
>   by the `sqlite3_open_v2()` call within `Database`
>
> It also adds a few trace events:
> - "Database::OpenInternal sqlite3_open_v2" directly around
>   the `sqlite3_open_v2()` call
> - "Database::Statement", spanning the time spent stepping for
>   each statement. These are emitted in new tracks named
>   "Database: {Tag}" parented on the track of the thread calling
>   `Step()`. These events also contain the associated prepared
>   statements (without bound parameters).
>
> Bug: 40949392
> Change-Id: I2de4a0359e68961f58d5e7f0434b5c56292626d1
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6019886
> Reviewed-by: Greg Thompson <grt@chromium.org>
> Commit-Queue: Anthony Vallée-Dubois <anthonyvd@chromium.org>
> Reviewed-by: Etienne Bergeron <etienneb@chromium.org>
> Reviewed-by: Ayu Ishii <ayui@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1385191}

Bug: 40949392
Change-Id: Ie5af7e4ef64d26e868d40cda803ed376b4c84763
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6034678
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Owners-Override: Mikihito Matsuura <mikt@google.com>
Auto-Submit: Mikihito Matsuura <mikt@google.com>
Commit-Queue: Mikihito Matsuura <mikt@google.com>
Cr-Commit-Position: refs/heads/main@{#1385457}
2024-11-20 05:54:41 +00:00
2024-11-20 05:39:40 +00:00
2024-11-08 21:56:14 +00:00
2024-11-18 15:42:05 +00:00

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