Revert 124790 - Minimized panels should not open on Windows when activated by the OS

chrome/browser/ui/panels/panel_browser_window_cocoa.mm

Index: chrome/browser/ui/panels/panel_browser_window_cocoa.mm
===================================================================
--- chrome/browser/ui/panels/panel_browser_window_cocoa.mm	(revision 124794)
+++ chrome/browser/ui/panels/panel_browser_window_cocoa.mm	(working copy)
@@ -156,11 +156,6 @@
   return [[controller_ window] isMainWindow];
 }
 
-void PanelBrowserWindowCocoa::PreventActivationByOS(bool prevent_activation) {
-  [controller_ preventBecomingKeyWindow:prevent_activation];
-  return;
-}
-
 gfx::NativeWindow PanelBrowserWindowCocoa::GetNativePanelHandle() {
   return [controller_ window];
 }