add tab hover card flag

infra/PATCHES.md

@@ -175,7 +175,10 @@ Disable fetching Field Trials/Variations Patch - https://github.com/ungoogled-so
 
 Enable double click to close tab flag - https://github.com/bigfoxtail/brave-core/commit/acec5efcbaa98722611f551712f051fb343af120
   - Found by @gz83, modified by me.
-  
+
+Enable disabling tab hover cards patch - https://github.com/ungoogled-software/ungoogled-chromium/blob/master/patches/extra/ungoogled-chromium/add-flag-for-tab-hover-cards.patch
+ - Credit win32ss for alerting me to this patch.
+
 Enable close confirmation patch - https://github.com/ungoogled-software/ungoogled-chromium/blob/master/patches/extra/ungoogled-chromium/add-flag-for-close-confirmation.patch
   - Modified by me.
 

src/chrome/browser/thorium_flag_choices.h

@@ -100,6 +100,16 @@ const FeatureEntry::Choice kForceGpuMemAvailableMbChoices[] = {
      "force-gpu-mem-available-mb", "1024"},
 };
 
+const FeatureEntry::Choice kTabHoverCardChoices[] = {
+    {flags_ui::kGenericExperimentChoiceDefault, "", ""},
+    {"None",
+     "tab-hover-cards",
+     "none"},
+    {"Tooltip",
+     "tab-hover-cards",
+     "tooltip"},
+};
+
 const FeatureEntry::Choice kCloseConfirmation[] = {
     {flags_ui::kGenericExperimentChoiceDefault, "", ""},
     {"Show confirmation with last window",

src/chrome/browser/thorium_flag_entries.h

@@ -114,6 +114,10 @@
      "Double Click to Close Tab",
      "Enables double clicking a tab to close it.",
      kOsDesktop, SINGLE_VALUE_TYPE("double-click-close-tab")},
+    {"tab-hover-cards",
+     "Tab Hover Cards",
+     "Allows removing the tab hover cards or using a tooltip as a replacement.",
+     kOsDesktop, MULTI_VALUE_TYPE(kTabHoverCardChoices)},
 
 #if !BUILDFLAG(IS_ANDROID)
     {"media-router",

src/chrome/browser/ui/views/tabs/tab.cc

@@ -709,8 +709,12 @@ void Tab::OnGestureEvent(ui::GestureEvent* event) {
 }
 
 std::u16string Tab::GetTooltipText(const gfx::Point& p) const {
-  // Tab hover cards replace tooltips for tabs.
-  return std::u16string();
+  // Tab hover cards don't replace tooltips for tabs in all cases.
+  if (base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII("tab-hover-cards") == "tooltip") {
+    return GetTooltipText(data_.title, GetAlertStateToShow(data_.alert_state));
+  } else {
+    return std::u16string();
+  }
 }
 
 void Tab::GetAccessibleNodeData(ui::AXNodeData* node_data) {

src/chrome/browser/ui/views/tabs/tab_strip.cc

@@ -1660,6 +1660,8 @@ void TabStrip::OnMouseEventInTab(views::View* source,
 }
 
 void TabStrip::UpdateHoverCard(Tab* tab, HoverCardUpdateType update_type) {
+  if (base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII("tab-hover-cards") == "tooltip" ||
+      base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII("tab-hover-cards") == "none") return;
   tab_container_->UpdateHoverCard(tab, update_type);
 }