Mac: Make ScopedTypeRef require explicit constructors

chrome/browser/ui/cocoa/passwords/account_chooser_view_controller.mm

 // Copyright 2015 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/passwords/account_chooser_view_controller.h"
 
 #include "base/mac/foundation_util.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 110 matching lines @@
     [signInButton_ setFrameOrigin:NSMakePoint(curX, kFramePadding)];
   }
   [cancelButton_ setFrameOrigin:NSMakePoint(
       curX - NSWidth([cancelButton_ frame]),
       kFramePadding)];
 
   NSSize buttonsSize = NSMakeSize(
       kDesiredBubbleWidth,
       std::min<CGFloat>([credentialButtons_ count], kMaxHeightAccounts) *
           kCredentialHeight);
-  base::scoped_nsobject<NSScrollView> scrollView = [[NSScrollView alloc]
-      initWithFrame:NSMakeRect(0, 0, buttonsSize.width, buttonsSize.height)];
+  base::scoped_nsobject<NSScrollView> scrollView([[NSScrollView alloc]
+      initWithFrame:NSMakeRect(0, 0, buttonsSize.width, buttonsSize.height)]);
   [scrollView
       setHasVerticalScroller:[credentialButtons_ count] > kMaxHeightAccounts
                                  ? YES
                                  : NO];
   [scrollView setBorderType:NSNoBorder];
   CGFloat buttonWidth = [scrollView contentSize].width;
   CGFloat curY = 0;
   base::scoped_nsobject<NSView> documentView([[NSView alloc]
       initWithFrame:NSMakeRect(0, 0, buttonWidth, [credentialButtons_ count] *
                                                       kCredentialHeight)]);
@@ skipping 115 matching lines @@
 
 - (NSArray*)credentialButtons {
   return credentialButtons_;
 }
 
 - (NSTextView*)titleView {
   return titleView_;
 }
 
 @end