Use delegate protocols present in the 10.6 SDK

chrome/browser/cocoa/autocomplete_text_field_unittest.mm

 // Copyright (c) 2009 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 <Cocoa/Cocoa.h>
 
+#import "base/cocoa_protocols_mac.h"
 #include "base/scoped_nsobject.h"
 #import "chrome/browser/cocoa/autocomplete_text_field.h"
 #import "chrome/browser/cocoa/autocomplete_text_field_cell.h"
 #import "chrome/browser/cocoa/autocomplete_text_field_editor.h"
 #import "chrome/browser/cocoa/cocoa_test_helper.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
 @interface AutocompleteTextFieldTestDelegate : NSObject {
   BOOL textShouldPaste_;
   BOOL receivedTextShouldPaste_;
   BOOL receivedFlagsChanged_;
   BOOL receivedControlTextDidBeginEditing_;
   BOOL receivedControlTextShouldEndEditing_;
 }
 - initWithTextShouldPaste:(BOOL)flag;
 - (BOOL)receivedTextShouldPaste;
 - (BOOL)receivedFlagsChanged;
 - (BOOL)receivedControlTextDidBeginEditing;
 - (BOOL)receivedControlTextShouldEndEditing;
 @end
 
-@interface AutocompleteTextFieldWindowTestDelegate : NSObject {
+@interface AutocompleteTextFieldWindowTestDelegate :
+    NSObject<NSWindowDelegate> {
   scoped_nsobject<AutocompleteTextFieldEditor> editor_;
 }
 - (id)windowWillReturnFieldEditor:(NSWindow *)sender toObject:(id)anObject;
 @end
 
 namespace {
 
 class AutocompleteTextFieldTest : public PlatformTest {
  public:
   AutocompleteTextFieldTest() {
@@ skipping 317 matching lines @@
   }
   EXPECT_TRUE(editor_ != nil);
 
   // This needs to be called every time, otherwise notifications
   // aren't sent correctly.
   [editor_ setFieldEditor:YES];
   return editor_;
 }
 
 @end