views: Add subpixel rendering test for views::Label.

ui/views/controls/label.h

 // 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.
 
 #ifndef UI_VIEWS_CONTROLS_LABEL_H_
 #define UI_VIEWS_CONTROLS_LABEL_H_
 #pragma once
 
 #include <string>
 
@@ skipping 201 matching lines @@
 
  private:
   // These tests call CalculateDrawStringParams in order to verify the
   // calculations done for drawing text.
   FRIEND_TEST_ALL_PREFIXES(LabelTest, DrawSingleLineString);
   FRIEND_TEST_ALL_PREFIXES(LabelTest, DrawMultiLineString);
   FRIEND_TEST_ALL_PREFIXES(LabelTest, DrawSingleLineStringInRTL);
   FRIEND_TEST_ALL_PREFIXES(LabelTest, DrawMultiLineStringInRTL);
   FRIEND_TEST_ALL_PREFIXES(LabelTest, AutoDetectDirectionality);
 
+  // Calls ComputeDrawStringFlags().
+  FRIEND_TEST_ALL_PREFIXES(LabelTest, DisableSubpixelRendering);
+
   static gfx::Font GetDefaultFont();
 
   void Init(const string16& text, const gfx::Font& font);
 
   void RecalculateColors();
 
   // If the mouse is over the text, SetContainsMouse(true) is invoked, otherwise
   // SetContainsMouse(false) is invoked.
   void UpdateContainsMouse(const MouseEvent& event);
 
@@ skipping 47 matching lines @@
   // allows this view to reserve space for a focus border that it otherwise
   // might not have because it is not itself focusable.
   bool has_focus_border_;
 
   DISALLOW_COPY_AND_ASSIGN(Label);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_LABEL_H_