Mac: Honour the user preference for triggering QuickLook with Force Click

ui/base/cocoa/appkit_utils.h

Index: ui/base/cocoa/appkit_utils.h
diff --git a/ui/base/cocoa/appkit_utils.h b/ui/base/cocoa/appkit_utils.h
index 3f1b446349d97ba63ed9e8cc4b3f050ec7aee209..bb11e078804fe9ab7bd2881ee12a6ba884509f0c 100644
--- a/ui/base/cocoa/appkit_utils.h
+++ b/ui/base/cocoa/appkit_utils.h
@@ -42,6 +42,9 @@ UI_BASE_EXPORT void DrawNinePartImage(NSRect frame,
 UI_BASE_EXPORT void WindowTitlebarReceivedDoubleClick(NSWindow* window,
                                                       id sender);
 
+// Whether a force-click event on the touchpad should invoke Quick Look.
+UI_BASE_EXPORT bool ForceClickInvokesQuickLook();
+
 }  // namespace ui
 
 #endif  // UI_BASE_COCOA_APPKIT_UTILS_H