Mac: ExternalPopupMenu::close should hide a showing popup menu.

content/browser/web_contents/web_contents_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 <Carbon/Carbon.h>
 
 #import "content/browser/web_contents/web_contents_view_mac.h"
 
 #include <string>
 
@@ skipping 230 matching lines @@
 
 // Display a popup menu for WebKit using Cocoa widgets.
 void WebContentsViewMac::ShowPopupMenu(
     const gfx::Rect& bounds,
     int item_height,
     double item_font_size,
     int selected_item,
     const std::vector<MenuItem>& items,
     bool right_aligned,
     bool allow_multiple_selection) {
-  PopupMenuHelper popup_menu_helper(web_contents_->GetRenderViewHost());
-  popup_menu_helper.ShowPopupMenu(bounds, item_height, item_font_size,
-                                  selected_item, items, right_aligned,
-                                  allow_multiple_selection);
+  popup_menu_helper_.reset(
+      new PopupMenuHelper(web_contents_->GetRenderViewHost()));
+  popup_menu_helper_->ShowPopupMenu(bounds, item_height, item_font_size,
+                                    selected_item, items, right_aligned,
+                                    allow_multiple_selection);
+  popup_menu_helper_.reset();
+}
+
+void WebContentsViewMac::HidePopupMenu() {
+  if (popup_menu_helper_)
+    popup_menu_helper_->Hide();
 }
 
 gfx::Rect WebContentsViewMac::GetViewBounds() const {
   // This method is not currently used on mac.
   NOTIMPLEMENTED();
   return gfx::Rect();
 }
 
 void WebContentsViewMac::SetAllowOverlappingViews(bool overlapping) {
   if (allow_overlapping_views_ == overlapping)
@@ skipping 360 matching lines @@
 // When the subviews require a layout, their size should be reset to the size
 // of this view. (It is possible for the size to get out of sync as an
 // optimization in preparation for an upcoming WebContentsView resize.
 // http://crbug.com/264207)
 - (void)resizeSubviewsWithOldSize:(NSSize)oldBoundsSize {
   for (NSView* subview in self.subviews)
     [subview setFrame:self.bounds];
 }
 
 @end