Use GetDisplayText() instead of text() for rendering text.

ui/gfx/render_text_unittest.cc

Index: ui/gfx/render_text_unittest.cc
diff --git a/ui/gfx/render_text_unittest.cc b/ui/gfx/render_text_unittest.cc
index 542939ea3081369af9a50fdf080f3490eaa7d3d8..aae647f223407aa4fa56c1b3c790bfbd4d3c904d 100644
--- a/ui/gfx/render_text_unittest.cc
+++ b/ui/gfx/render_text_unittest.cc
@@ -28,6 +28,12 @@
 #include "ui/gfx/platform_font_win.h"
 #endif
 
+#if defined(OS_MACOSX)
+#include <ApplicationServices/ApplicationServices.h>
+
+#include "ui/gfx/render_text_mac.h"
+#endif
+
 using base::ASCIIToUTF16;
 using base::UTF8ToUTF16;
 using base::WideToUTF16;
@@ -2608,4 +2614,23 @@ TEST_F(RenderTextTest, TextDoesntClip) {
   }
 }
 
+#if defined(OS_MACOSX)
+TEST_F(RenderTextTest, Mac_ElidedText) {
+  RenderTextMac render_text;
+  base::string16 text(ASCIIToUTF16("This is example."));

[msw, 2015/03/02 22:50:55]

nit: "This is an example."

[Jun Mukai, 2015/03/02 23:10:37]

Done.

+  render_text.SetText(text);
+  render_text.EnsureLayout();
+  // Note that glyph count matches to the text length because all the characters

[msw, 2015/03/02 22:50:55]

nit: "// NOTE: Character and glyph counts are only comparable for simple text."
(optionally use this same one-liner comment at line 2038)

[Jun Mukai, 2015/03/02 23:10:37]

Done.

+  // in |text| is simple.
+  EXPECT_EQ(text.size(), CTLineGetGlyphCount(render_text.line_));
+
+  render_text.SetElideBehavior(ELIDE_TAIL);
+  gfx::Size string_size = render_text.GetStringSize();
+  string_size.set_width(string_size.width() / 2);
+  render_text.SetDisplayRect(gfx::Rect(string_size));
+  render_text.EnsureLayout();
+  EXPECT_GT(text.size(), CTLineGetGlyphCount(render_text.line_));
+}
+#endif
+
 }  // namespace gfx