views: Convert IsEnabled() to just enabled() since it's just a simple accessor.

chrome/browser/chromeos/login/username_view.cc

Index: chrome/browser/chromeos/login/username_view.cc
diff --git a/chrome/browser/chromeos/login/username_view.cc b/chrome/browser/chromeos/login/username_view.cc
index 69eae551265e05a9c32f85d5848c18959e4801bc..b7a0796fe51f7e344e68cd7cd9de62eed88be43d 100644
--- a/chrome/browser/chromeos/login/username_view.cc
+++ b/chrome/browser/chromeos/login/username_view.cc
@@ -112,7 +112,7 @@ void UsernameView::PaintUsername(const gfx::Rect& bounds) {
   // Draw the text.
   // Note, direct call of the DrawStringInt method produces the green dots
   // along the text perimeter (when the label is place on the white background).
-  SkColor text_color = IsEnabled() ? enabled_color() : disabled_color();
+  SkColor text_color = enabled() ? enabled_color() : disabled_color();
   SkColor kInvisibleHaloColor = 0x00000000;
   canvas.DrawStringWithHalo(GetText(), font(), text_color,
                             kInvisibleHaloColor, bounds.x() + margin_width_,