Delete some unused code found by -Wunused-function

ui/gfx/render_text_unittest.cc

 // 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.
 
 #include "ui/gfx/render_text.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/utf_string_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/base/l10n/l10n_util.h"
@@ skipping 20 matching lines @@
 const wchar_t kRtlLtr[] =    L"\x5d0\x5d1"L"a";
 const wchar_t kRtlLtrRtl[] = L"\x5d0"L"a"L"\x5d1";
 
 // Checks whether |range| contains |index|. This is not the same as calling
 // |range.Contains(ui::Range(index))| - as that would return true when
 // |index| == |range.end()|.
 bool IndexInRange(const ui::Range& range, size_t index) {
   return index >= range.start() && index < range.end();
 }
 
+#if !defined(OS_MACOSX)
 // A test utility function to set the application default text direction.
 void SetRTL(bool rtl) {
   // Override the current locale/direction.
   base::i18n::SetICUDefaultLocale(rtl ? "he" : "en");
 #if defined(TOOLKIT_GTK)
   // Do the same for GTK, which does not rely on the ICU default locale.
   gtk_widget_set_default_direction(rtl ? GTK_TEXT_DIR_RTL : GTK_TEXT_DIR_LTR);
 #endif
   EXPECT_EQ(rtl, base::i18n::IsRTL());
 }
+#endif
 
 }  // namespace
 
 class RenderTextTest : public testing::Test {
 };
 
 TEST_F(RenderTextTest, DefaultStyle) {
   // Defaults to empty text with no styles.
   scoped_ptr<RenderText> render_text(RenderText::CreateInstance());
   EXPECT_TRUE(render_text->text().empty());
@@ skipping 1243 matching lines @@
   EXPECT_EQ(render_text->display_rect().width() - width - 1,
             render_text->GetUpdatedCursorBounds().x());
 
   // Reset the application default text direction to LTR.
   SetRTL(was_rtl);
   EXPECT_EQ(was_rtl, base::i18n::IsRTL());
 }
 #endif  // !defined(OS_MACOSX)
 
 }  // namespace gfx