base: Make ScopedVector::clear() destroy elements.

chrome/browser/ui/cocoa/location_bar/location_bar_view_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/location_bar/location_bar_view_mac.h"
 
 #include "base/bind.h"
 #include "base/message_loop.h"
 #include "base/stl_util.h"
 #include "base/string_util.h"
@@ skipping 573 matching lines @@
   }
   return icons_updated;
 }
 
 void LocationBarViewMac::DeletePageActionDecorations() {
   // TODO(shess): Deleting these decorations could result in the cell
   // refering to them before things are laid out again.  Meanwhile, at
   // least fail safe.
   [[field_ cell] clearDecorations];
 
-  page_action_decorations_.reset();
+  page_action_decorations_.clear();
 }
 
 void LocationBarViewMac::RefreshPageActionDecorations() {
   if (!IsEditable()) {
     DeletePageActionDecorations();
     return;
   }
 
   TabContents* tab_contents = GetTabContents();
   if (!tab_contents) {
@@ skipping 114 matching lines @@
 void LocationBarViewMac::UpdateChromeToMobileEnabled() {
   if (!chrome_to_mobile_decoration_.get())
     return;
 
   DCHECK(ChromeToMobileService::IsChromeToMobileEnabled());
   bool enabled = [field_ isEditable] && !toolbar_model_->input_in_progress() &&
       ChromeToMobileServiceFactory::GetForProfile(profile_)->HasDevices();
   chrome_to_mobile_decoration_->SetVisible(enabled);
   command_updater_->UpdateCommandEnabled(IDC_CHROME_TO_MOBILE_PAGE, enabled);
 }