Make operators on scoped_ptr match the ones defined for std::unique_ptr

chrome/browser/ui/cocoa/browser_window_controller_private.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/browser_window_controller_private.h"
 
 #include <cmath>
 
 #import "base/auto_reset.h"
 #include "base/command_line.h"
@@ skipping 139 matching lines @@
   // |windowScreen| can be nil (for example, if the monitor arrangement was
   // changed while in fullscreen mode).  If we see a nil screen, return without
   // saving.
   // TODO(rohitrao): We should just not save anything for fullscreen windows.
   // http://crbug.com/36479.
   if (!windowScreen)
     return;
 
   // Only save main window information to preferences.
   PrefService* prefs = browser_->profile()->GetPrefs();
-  if (!prefs || browser_ != chrome::GetLastActiveBrowser())
+  if (!prefs || browser_.get() != chrome::GetLastActiveBrowser())
     return;
 
   // Save the current work area, in flipped coordinates.
   gfx::Rect workArea(NSRectToCGRect([windowScreen visibleFrame]));
   workArea.set_y(monitorFrame.size.height - workArea.y() - workArea.height());
 
   scoped_ptr<DictionaryPrefUpdate> update =
       chrome::GetWindowPlacementDictionaryReadWrite(
           chrome::GetWindowName(browser_.get()),
           browser_->profile()->GetPrefs());
@@ skipping 1045 matching lines @@
   return browser_->tab_strip_model()->GetActiveWebContents();
 }
 
 - (PermissionBubbleManager*)permissionBubbleManager {
   if (WebContents* contents = [self webContents])
     return PermissionBubbleManager::FromWebContents(contents);
   return nil;
 }
 
 @end  // @implementation BrowserWindowController(Private)