Add MenuItemView API to add and remove items at a particular index.

chrome/chrome_tests.gypi

Index: chrome/chrome_tests.gypi
diff --git a/chrome/chrome_tests.gypi b/chrome/chrome_tests.gypi
index 9dcb900b9ec325447103dd24b902118887cc8260..c52e7ef39b2c7f5369469f9bc89e9439382039d2 100644
--- a/chrome/chrome_tests.gypi
+++ b/chrome/chrome_tests.gypi
@@ -451,6 +451,7 @@
         'test/interactive_ui/npapi_interactive_test.cc',
         'test/interactive_ui/view_event_test_base.cc',
         'test/interactive_ui/view_event_test_base.h',
+        'test/menu_item_view_test.cc',
         'test/out_of_proc_test_runner.cc',
         'test/unit/chrome_test_suite.h',
       ],
@@ -472,6 +473,7 @@
             'test/interactive_ui/npapi_interactive_test.cc',
             'test/interactive_ui/view_event_test_base.cc',
             'test/interactive_ui/view_event_test_base.h',
+            'test/menu_item_view_test.cc',
           ],
         }],
         ['OS=="linux" and toolkit_views==1', {
@@ -498,6 +500,7 @@
             'test/interactive_ui/npapi_interactive_test.cc',
             'test/interactive_ui/view_event_test_base.cc',
             'test/interactive_ui/view_event_test_base.h',
+            'test/menu_item_view_test.cc',
           ],
           # See comment about the same line in chrome/chrome_tests.gypi.
           'xcode_settings': {'OTHER_LDFLAGS': ['-Wl,-ObjC']},
@@ -2022,6 +2025,7 @@
             'browser/ui/tests/ui_gfx_image_unittest.cc',
             'browser/ui/gtk/reload_button_gtk_unittest.cc',
             'browser/password_manager/password_store_default_unittest.cc',
+            'test/menu_item_view_test.cc',
             'tools/convert_dict/convert_dict_unittest.cc',
             '../third_party/hunspell/google/hunspell_tests.cc',
           ],