Remove gfx::DIAGONAL_STRIKE and supporting code.

ui/views/examples/textfield_example.cc

Index: ui/views/examples/textfield_example.cc
diff --git a/ui/views/examples/textfield_example.cc b/ui/views/examples/textfield_example.cc
index 98d806900587dc7840cb3dd793b28909b8e5f1ae..6f3c5f2d956c8afd8fb7c9460ab61ce7291664a9 100644
--- a/ui/views/examples/textfield_example.cc
+++ b/ui/views/examples/textfield_example.cc
@@ -149,7 +149,6 @@ void TextfieldExample::ButtonPressed(Button* sender, const ui::Event& event) {
         const gfx::Range small_range(2 * fifth, 3 * fifth);
         name_->ApplyStyle(gfx::ITALIC, true, small_range);
         name_->ApplyStyle(gfx::UNDERLINE, false, small_range);
-        name_->ApplyStyle(gfx::DIAGONAL_STRIKE, true, small_range);
         name_->ApplyColor(SK_ColorRED, small_range);
       }
     }