GitLab

- added ViewsDelegate::GetDispositionForEvent() pure virtual
- added MenuModelAdapter
- added unit test for MenuModelAdapter
- added comment for MenuModel::GetFirstItemIndex() that callers may pass NULL for NativeMenu argument
- fixed index offset bug in MenuModel::GetModelAndIndexForCommandId()
- fixed spurious call to MenuDelegate::IsCommandEnabled()

BUG=none
TEST=included


Review URL: http://codereview.chromium.org/7067032

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@86677 0039d316-1c4b-4281-b951-d872f2087c98