This commit adds a new user preference that allows users to disable the
middle-click-to-close tab functionality, addressing user feedback that
accidental middle-clicks can cause unwanted tab closures.
Changes include:
**Browser Preferences:**
- Add kTabsCloseOnMiddleClick pref (default: true) in brave_tab_prefs.h
- Register preference in brave_prefs_util.cc for settings UI exposure
**UI Implementation:**
- Extend TabSlotController interface with CanCloseTabViaMiddleButtonClick()
- Implement pref checking in BraveTabStrip via base class override
- Override TabSlotController methods in tab_strip.h/cc to respect preference
- Add chromium_src overrides for FakeTabSlotController and FakeBaseTabStripController
to support testing infrastructure
**Tab Click Handling:**
- Patch tab.cc to check controller preference before handling middle clicks
- Use plaster.toml rewrite for cleaner code transformation
- Maintain existing behavior when preference is enabled (default)
**Settings UI:**
- Add "Close tabs on middle click" toggle to Appearance > Tabs settings
- Include localized strings in brave_settings_strings.grdp
Sangwoo Ko
2e2024b511