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From c2d0133f47afb59b4ce64e42215d1d053f15250a Mon Sep 17 00:00:00 2001
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From: Stephan Hartmann <stha09@googlemail.com>
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Date: Tue, 13 Apr 2021 23:21:42 +0000
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Subject: [PATCH] fix crash in ThemeService
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ThemeSyncableService and ThemeService are owned by each other. On
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destruction of ThemeService, ThemeSyncableService gets destructed as
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well, but calls RemoveObserver of partly destructed ThemeService object.
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To avoid already destructed |observers_| list, move it before
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|theme_syncable_service_| definition.
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Bug: 1190561
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Change-Id: I4dc2c990d589071d97b7fa737afef54463c84751
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Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2821311
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Commit-Queue: Peter Kasting <pkasting@chromium.org>
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Reviewed-by: Peter Kasting <pkasting@chromium.org>
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Cr-Commit-Position: refs/heads/master@{#872164}
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---
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chrome/browser/themes/theme_service.h | 6 ++++--
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1 file changed, 4 insertions(+), 2 deletions(-)
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diff --git a/chrome/browser/themes/theme_service.h b/chrome/browser/themes/theme_service.h
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index 592d40ae9de0f..337dfac9a040f 100644
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--- a/chrome/browser/themes/theme_service.h
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+++ b/chrome/browser/themes/theme_service.h
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@@ -299,6 +299,10 @@ class ThemeService : public KeyedService,
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// The number of infobars currently displayed.
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int number_of_reinstallers_ = 0;
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+ // Declared before |theme_syncable_service_|, because ThemeSyncableService
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+ // removes itself from the |observers_| list on destruction.
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+ base::ObserverList<ThemeServiceObserver> observers_;
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+
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std::unique_ptr<ThemeSyncableService> theme_syncable_service_;
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#if BUILDFLAG(ENABLE_EXTENSIONS)
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@@ -320,8 +324,6 @@ class ThemeService : public KeyedService,
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ScopedObserver<ui::NativeTheme, ui::NativeThemeObserver>
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native_theme_observer_{this};
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- base::ObserverList<ThemeServiceObserver> observers_;
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-
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base::WeakPtrFactory<ThemeService> weak_ptr_factory_{this};
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DISALLOW_COPY_AND_ASSIGN(ThemeService);
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