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Prevent mouse wheel fingerprinting on Windows

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This commit is contained in:
Carmelo Messina
2025-02-07 13:46:55 +01:00
parent 4b85dd8fe4
commit 3bd94d641d
2 changed files with 23 additions and 0 deletions
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build/cromite_patches_list.txt
+1
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@@ -293,6 +293,7 @@ PublicKeyCredential-fingerprinting-mitigations.patch
Disable-Web-Bluetooth-by-default-in-desktop-platforms.patch
Enable-Cert-Management-UI.patch
Enable-ProcessBoundStringEncryption-by-default.patch
Prevent-mouse-wheel-fingerprinting-on-Windows.patch
# temporary or wip patches
Temp-PerformanceNavigationTiming-privacy-fix.patch
build/patches/Prevent-mouse-wheel-fingerprinting-on-Windows.patch
+22
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@@ -0,0 +1,22 @@
From: uazo <uazo@users.noreply.github.com>
Date: Fri, 7 Feb 2025 11:27:51 +0000
Subject: Prevent mouse wheel fingerprinting on Windows
License: GPL-2.0-or-later - https://spdx.org/licenses/GPL-2.0-or-later.html
---
ui/events/blink/web_input_event_builders_win.cc | 2 ++
1 file changed, 2 insertions(+)
diff --git a/ui/events/blink/web_input_event_builders_win.cc b/ui/events/blink/web_input_event_builders_win.cc
--- a/ui/events/blink/web_input_event_builders_win.cc
+++ b/ui/events/blink/web_input_event_builders_win.cc
@@ -297,6 +297,8 @@ WebMouseWheelEvent WebMouseWheelEventBuilder::Build(
// |wheel_delta| is expressed in multiples or divisions of WHEEL_DELTA,
// divide this out here to get the number of wheel ticks.
float num_ticks = wheel_delta / WHEEL_DELTA;
+ if (num_ticks > 0) num_ticks = 1;
+ else if (num_ticks < 0) num_ticks = -1;
float scroll_delta = num_ticks;
if (horizontal_scroll) {
unsigned long scroll_chars = kDefaultScrollCharsPerWheelDelta;
--