Minor C++ fixes found by Clang.

chrome/browser/extensions/extension_accessibility_api_constants.cc

 // Copyright (c) 2010 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.
 
 #include "chrome/browser/extensions/extension_accessibility_api_constants.h"
 
 namespace extension_accessibility_api_constants {
 
 // String keys for AccessibilityObject properties.
 const wchar_t kTypeKey[] = L"type";
 const wchar_t kNameKey[] = L"name";
 const wchar_t kDetailsKey[] = L"details";
 const wchar_t kValueKey[] = L"details.value";
 const wchar_t kPasswordKey[] = L"details.isPassword";
 const wchar_t kItemCountKey[] = L"details.itemCount";
 const wchar_t kItemIndexKey[] = L"details.itemIndex";
 const wchar_t kSelectionStartKey[] = L"details.selectionStart";
 const wchar_t kSelectionEndKey[] = L"details.selectionEnd";
 const wchar_t kCheckedKey[] = L"details.isChecked";
 
 // Events.
 const char kOnWindowOpened[] = "experimental.accessibility.onWindowOpened";
 const char kOnWindowClosed[] = "experimental.accessibility.onWindowClosed";
 const char kOnControlFocused[] = "experimental.accessibility.onControlFocused";
 const char kOnControlAction[] = "experimental.accessibility.onControlAction";
 const char kOnTextChanged[] = "experimental.accessibility.onTextChanged";
 
 // Types of controls that can receive accessibility events.
-extern const char kTypeButton[] = "button";
-extern const char kTypeCheckbox[] = "checkbox";
-extern const char kTypeComboBox[] = "combobox";
-extern const char kTypeLink[] = "link";
-extern const char kTypeListBox[] = "listbox";
-extern const char kTypeRadioButton[] = "radiobutton";
-extern const char kTypeTab[] = "tab";
-extern const char kTypeTextBox[] = "textbox";
-extern const char kTypeWindow[] = "window";
+const char kTypeButton[] = "button";
+const char kTypeCheckbox[] = "checkbox";
+const char kTypeComboBox[] = "combobox";
+const char kTypeLink[] = "link";
+const char kTypeListBox[] = "listbox";
+const char kTypeRadioButton[] = "radiobutton";
+const char kTypeTab[] = "tab";
+const char kTypeTextBox[] = "textbox";
+const char kTypeWindow[] = "window";
 
 }  // namespace extension_accessibility_api_constants