Convert //chrome/browser/ui from scoped_ptr to std::unique_ptr

chrome/browser/ui/cocoa/confirm_bubble_cocoa.mm

Index: chrome/browser/ui/cocoa/confirm_bubble_cocoa.mm
diff --git a/chrome/browser/ui/cocoa/confirm_bubble_cocoa.mm b/chrome/browser/ui/cocoa/confirm_bubble_cocoa.mm
index 80a547525b642f291b3ddc454c2b28f6d488bd36..b1cd01d578a1c3272def74894175b3e0b6bdc52b 100644
--- a/chrome/browser/ui/cocoa/confirm_bubble_cocoa.mm
+++ b/chrome/browser/ui/cocoa/confirm_bubble_cocoa.mm
@@ -46,7 +46,7 @@ namespace chrome {
 void ShowConfirmBubble(gfx::NativeWindow window,
                        gfx::NativeView anchor_view,
                        const gfx::Point& origin,
-                       scoped_ptr<ConfirmBubbleModel> model) {
+                       std::unique_ptr<ConfirmBubbleModel> model) {
   // Create a custom NSViewController that manages a bubble view, and add it to
   // a child to the specified |anchor_view|. This controller will be
   // automatically deleted when it loses first-responder status.