[Mac] Fix for the tab detach position

chrome/browser/ui/cocoa/tabs/tab_strip_drag_controller.mm

Index: chrome/browser/ui/cocoa/tabs/tab_strip_drag_controller.mm
diff --git a/chrome/browser/ui/cocoa/tabs/tab_strip_drag_controller.mm b/chrome/browser/ui/cocoa/tabs/tab_strip_drag_controller.mm
index 2e6e3378486d30d0dd24926ca5f166517cc8b252..a46fe9f4c864a26e5d503a9e583d9163a2b4501d 100644
--- a/chrome/browser/ui/cocoa/tabs/tab_strip_drag_controller.mm
+++ b/chrome/browser/ui/cocoa/tabs/tab_strip_drag_controller.mm
@@ -352,9 +352,11 @@ static BOOL PointIsInsideView(NSPoint screenPoint, NSView* view) {
   // See http://crbug.com/687647.
   NSPoint origin = sourceWindowFrame_.origin;
   origin.x += (thisPoint.x - dragOrigin_.x);
-  origin.y +=
-      (thisPoint.y - dragOrigin_.y) +
-      ([sourceController_ menubarOffset] + [sourceController_ menubarHeight]);
+  origin.y += (thisPoint.y - dragOrigin_.y);
+  if ([sourceController_ isInAnyFullscreenMode]) {
+    origin.y +=
+        [sourceController_ menubarOffset] + [sourceController_ menubarHeight];
+  }
 
   if (tearProgress < 1) {
     // If the tear animation is not complete, call back to ourself with the