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

chrome/browser/ui/cocoa/tab_contents/chrome_web_contents_view_delegate_mac.mm

 // Copyright (c) 2012 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/tab_contents/chrome_web_contents_view_delegate_mac.h"
 
 #include <utility>
 
 #include "base/profiler/scoped_tracker.h"
 #import "chrome/browser/renderer_host/chrome_render_widget_host_view_mac_delegate.h"
@@ skipping 39 matching lines @@
   // TODO(erikchen): Remove ScopedTracker below once crbug.com/458401 is fixed.
   tracked_objects::ScopedTracker tracking_profile(
       FROM_HERE_WITH_EXPLICIT_FUNCTION(
           "458401 ChromeWebContentsViewDelegateMac::ShowContextMenu"));
   ShowMenu(
       BuildMenu(content::WebContents::FromRenderFrameHost(render_frame_host),
                 params));
 }
 
 void ChromeWebContentsViewDelegateMac::ShowMenu(
-    scoped_ptr<RenderViewContextMenuBase> menu) {
+    std::unique_ptr<RenderViewContextMenuBase> menu) {
   // TODO(erikchen): Remove ScopedTracker below once crbug.com/458401 is fixed.
   tracked_objects::ScopedTracker tracking_profile(
       FROM_HERE_WITH_EXPLICIT_FUNCTION(
           "458401 ChromeWebContentsViewDelegateMac::ShowMenu"));
 
   context_menu_ = std::move(menu);
   if (!context_menu_.get())
     return;
 
   // The renderer may send the "show context menu" message multiple times, one
   // for each right click mouse event it receives. Normally, this doesn't happen
   // because mouse events are not forwarded once the context menu is showing.
   // However, there's a race - the context menu may not yet be showing when
   // the second mouse event arrives. In this case, |ShowContextMenu()| will
   // get called multiple times - if so, don't create another context menu.
   // TODO(asvitkine): Fix the renderer so that it doesn't do this.
   content::RenderWidgetHostView* widget_view = GetActiveRenderWidgetHostView();
   if (widget_view && widget_view->IsShowingContextMenu())
     return;
 
   context_menu_->Show();
 }
 
-scoped_ptr<RenderViewContextMenuBase>
+std::unique_ptr<RenderViewContextMenuBase>
 ChromeWebContentsViewDelegateMac::BuildMenu(
     content::WebContents* web_contents,
     const content::ContextMenuParams& params) {
   // TODO(erikchen): Remove ScopedTracker below once crbug.com/458401 is fixed.
   tracked_objects::ScopedTracker tracking_profile1(
       FROM_HERE_WITH_EXPLICIT_FUNCTION(
           "458401 ChromeWebContentsViewDelegateMac::BuildMenu"));
-  scoped_ptr<RenderViewContextMenuBase> menu;
+  std::unique_ptr<RenderViewContextMenuBase> menu;
   content::RenderFrameHost* focused_frame = web_contents->GetFocusedFrame();
   // If the frame tree does not have a focused frame at this point, do not
   // bother creating RenderViewContextMenuMac.
   // This happens if the frame has navigated to a different page before
   // ContextMenu message was received by the current RenderFrameHost.
   if (focused_frame) {
     content::RenderWidgetHostView* widget_view =
         GetActiveRenderWidgetHostView();
 
     // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/458401
@@ skipping 23 matching lines @@
 }
 
 namespace chrome {
 
 content::WebContentsViewDelegate* CreateWebContentsViewDelegate(
     content::WebContents* web_contents) {
   return new ChromeWebContentsViewDelegateMac(web_contents);
 }
 
 }  // namespace chrome