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

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

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "chrome/browser/ui/cocoa/media_picker/desktop_media_picker_controller.h"
 
 #include "base/bind.h"
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/media/desktop_media_list_observer.h"
@@ skipping 40 matching lines @@
   void SetUp() override {
     CocoaTest::SetUp();
 
     media_list_ = new FakeDesktopMediaList();
 
     DesktopMediaPicker::DoneCallback callback =
         base::Bind(&DesktopMediaPickerControllerTest::OnResult,
                    base::Unretained(this));
 
     controller_.reset([[DesktopMediaPickerController alloc]
-        initWithMediaList:scoped_ptr<DesktopMediaList>(media_list_)
+        initWithMediaList:std::unique_ptr<DesktopMediaList>(media_list_)
                    parent:nil
                  callback:callback
                   appName:base::ASCIIToUTF16("Screenshare Test")
                targetName:base::ASCIIToUTF16("https://foo.com")
              requestAudio:true]);
   }
 
   void TearDown() override {
     controller_.reset();
     CocoaTest::TearDown();
@@ skipping 174 matching lines @@
   index_set = [NSIndexSet indexSetWithIndex:2];
   [[controller_ sourceBrowser] setSelectionIndexes:index_set
                               byExtendingSelection:NO];
   EXPECT_EQ(YES, [checkbox isEnabled]);
 
   index_set = [NSIndexSet indexSet];
   [[controller_ sourceBrowser] setSelectionIndexes:index_set
                               byExtendingSelection:NO];
   EXPECT_EQ(NO, [checkbox isEnabled]);
 }