MacViews: Tweak ComboboxTest.GetTextForRowTest to get it to pass.

ui/views/controls/combobox/combobox_unittest.cc

Index: ui/views/controls/combobox/combobox_unittest.cc
diff --git a/ui/views/controls/combobox/combobox_unittest.cc b/ui/views/controls/combobox/combobox_unittest.cc
index 67625a2aea12d06639009647fc7b37884ed8d167..b7ded4ad927b8f4220364c6a45a64143875720cb 100644
--- a/ui/views/controls/combobox/combobox_unittest.cc
+++ b/ui/views/controls/combobox/combobox_unittest.cc
@@ -431,8 +431,8 @@ TEST_F(ComboboxTest, SkipMultipleSeparatorsAtEnd) {
 TEST_F(ComboboxTest, GetTextForRowTest) {
   InitCombobox();
   std::set<int> separators;
-  separators.insert(0);

[msw, 2014/07/07 23:37:22]

I think it was our intention here to ensure that a 0-index separator didn't
Combobox problems. Rather than revising the test, perhaps we should revise the
Mac-specific code that causes this to fail on that platform? Or perhaps we want
to revise the cross-platform handling of separators in GetItemAt (or the
selected index initialization).

   separators.insert(1);
+  separators.insert(2);
   separators.insert(9);
   model_->SetSeparators(separators);
   for (int i = 0; i < combobox_->GetRowCount(); ++i) {