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

chrome/browser/ui/cocoa/media_picker/desktop_media_picker_cocoa.mm

Index: chrome/browser/ui/cocoa/media_picker/desktop_media_picker_cocoa.mm
diff --git a/chrome/browser/ui/cocoa/media_picker/desktop_media_picker_cocoa.mm b/chrome/browser/ui/cocoa/media_picker/desktop_media_picker_cocoa.mm
index 39780149fe9dd2c18d96b13a99bc382a5eccfb14..e46f2ac3e5906aa3cdb0b8a6c8147041a5479578 100644
--- a/chrome/browser/ui/cocoa/media_picker/desktop_media_picker_cocoa.mm
+++ b/chrome/browser/ui/cocoa/media_picker/desktop_media_picker_cocoa.mm
@@ -19,7 +19,7 @@ void DesktopMediaPickerCocoa::Show(content::WebContents* web_contents,
                                    gfx::NativeWindow parent,
                                    const base::string16& app_name,
                                    const base::string16& target_name,
-                                   scoped_ptr<DesktopMediaList> media_list,
+                                   std::unique_ptr<DesktopMediaList> media_list,
                                    bool request_audio,
                                    const DoneCallback& done_callback) {
   controller_.reset([[DesktopMediaPickerController alloc]
@@ -33,6 +33,6 @@ void DesktopMediaPickerCocoa::Show(content::WebContents* web_contents,
 }
 
 // static
-scoped_ptr<DesktopMediaPicker> DesktopMediaPicker::Create() {
-  return scoped_ptr<DesktopMediaPicker>(new DesktopMediaPickerCocoa());
+std::unique_ptr<DesktopMediaPicker> DesktopMediaPicker::Create() {
+  return std::unique_ptr<DesktopMediaPicker>(new DesktopMediaPickerCocoa());
 }