Fix many memory leaks in chrome/browser/ui/cocoa/omnibox.

chrome/browser/ui/cocoa/omnibox/omnibox_popup_matrix.h

 // Copyright 2013 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.
 
 #ifndef CHROME_BROWSER_UI_COCOA_OMNIBOX_OMNIBOX_POPUP_MATRIX_H_
 #define CHROME_BROWSER_UI_COCOA_OMNIBOX_OMNIBOX_POPUP_MATRIX_H_
 
 #import <Cocoa/Cocoa.h>
 #include <stddef.h>
 
 #import "ui/base/cocoa/tracking_area.h"
 #include "ui/base/window_open_disposition.h"
 
 class AutocompleteResult;
 @class OmniboxPopupCell;
 @class OmniboxPopupMatrix;
 class OmniboxPopupViewMac;
 
 @interface OmniboxPopupTableController
-    : NSViewController<NSTableViewDelegate, NSTableViewDataSource> {
+    : NSObject<NSTableViewDelegate, NSTableViewDataSource> {
  @private
   base::scoped_nsobject<NSArray> array_;
   NSInteger hoveredIndex_;
 };
 
 // Setup the information used by the NSTableView data source.
 - (instancetype)initWithMatchResults:(const AutocompleteResult&)result
                            tableView:(OmniboxPopupMatrix*)tableView
                            popupView:(const OmniboxPopupViewMac&)popupView
                          answerImage:(NSImage*)answerImage;
@@ skipping 63 matching lines @@
 
 // Move the selection to |rowIndex|.
 - (void)selectRowIndex:(NSInteger)rowIndex;
 
 // Setup the NSTableView data source.
 - (void)setController:(OmniboxPopupTableController*)controller;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_OMNIBOX_OMNIBOX_POPUP_MATRIX_H_