Remove base/mac/scoped_nsexception_enabler.h.

chrome/browser/spellchecker/spellcheck_platform_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.
 
 // Integration with OS X built-in spellchecker.
 
 #include "chrome/browser/spellchecker/spellcheck_platform.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/logging.h"
 #include "base/mac/foundation_util.h"
-#include "base/mac/scoped_nsexception_enabler.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/time/time.h"
 #include "chrome/common/spellcheck_common.h"
 #include "chrome/common/spellcheck_messages.h"
 #include "chrome/common/spellcheck_result.h"
 #include "content/public/browser/browser_message_filter.h"
 #include "content/public/browser/browser_thread.h"
 
 using base::TimeTicks;
 using content::BrowserMessageFilter;
 using content::BrowserThread;
 
 namespace {
 // The number of characters in the first part of the language code.
 const unsigned int kShortLanguageCodeSize = 2;
 
 // +[NSSpellChecker sharedSpellChecker] can throw exceptions depending
 // on the state of the pasteboard, or possibly as a result of
 // third-party code (when setting up services entries).  The following
 // receives nil if an exception is thrown, in which case
 // spell-checking will not work, but it also will not crash the
 // browser.
 NSSpellChecker* SharedSpellChecker() {
-  return base::mac::ObjCCastStrict<NSSpellChecker>(
-      base::mac::RunBlockIgnoringExceptions(^{
-          return [NSSpellChecker sharedSpellChecker];
-      }));
+  @try {
+    return [NSSpellChecker sharedSpellChecker];
+  } @catch (id exception) {
+    return nil;
+  }
 }
 
 // A private utility function to convert hunspell language codes to OS X
 // language codes.
 NSString* ConvertLanguageCodeToMac(const std::string& hunspell_lang_code) {
   NSString* whole_code = base::SysUTF8ToNSString(hunspell_lang_code);
 
   if ([whole_code length] > kShortLanguageCodeSize) {
     NSString* lang_code = [whole_code
                            substringToIndex:kShortLanguageCodeSize];
@@ skipping 244 matching lines @@
 
 ScopedEnglishLanguageForTest::ScopedEnglishLanguageForTest()
     : state_(new SpellcheckerStateInternal) {
 }
 
 ScopedEnglishLanguageForTest::~ScopedEnglishLanguageForTest() {
   delete state_;
 }
 
 }  // namespace spellcheck_platform