Allow TextButton derivatives to override drawing of certain parts.

ui/views/controls/button/text_button.h

Index: ui/views/controls/button/text_button.h
diff --git a/ui/views/controls/button/text_button.h b/ui/views/controls/button/text_button.h
index 9185b59f3694504d48ff28ab2e54339bb7c8273b..de612765ac1f8a2ed6fc0a8025f220dd9474aaee 100644
--- a/ui/views/controls/button/text_button.h
+++ b/ui/views/controls/button/text_button.h
@@ -160,6 +160,11 @@ class VIEWS_EXPORT TextButtonBase : public CustomButton,
   enum PaintButtonMode { PB_NORMAL, PB_FOR_DRAG };
   virtual void PaintButton(gfx::Canvas* canvas, PaintButtonMode mode);
 
+  // Paint the button's text into the specified canvas. If |mode| is
+  // |PB_FOR_DRAG|, the function paints a drag image representation. Derived
+  // can override this function to change only the text rendering.
+  virtual void OnPaintText(gfx::Canvas* canvas, PaintButtonMode mode);

[sky, 2014/05/15 16:55:12]

Why is this public?

[Roger Tawa OOO till Jul 10th, 2014/05/15 17:19:27]

No good reason.  Made it protected.

+
   // Overridden from View:
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual gfx::Size GetMinimumSize() OVERRIDE;
@@ -328,6 +333,11 @@ class VIEWS_EXPORT TextButton : public TextButtonBase {
   virtual void PaintButton(gfx::Canvas* canvas, PaintButtonMode mode) OVERRIDE;
 
  protected:
+  // Paint the button's icon into the specified canvas. If |mode| is
+  // |PB_FOR_DRAG|, the function paints a drag image representation. Derived
+  // can override this function to change only the icon rendering.
+  virtual void OnPaintIcon(gfx::Canvas* canvas, PaintButtonMode mode);
+
   gfx::ImageSkia icon() const { return icon_; }
 
   virtual const gfx::ImageSkia& GetImageToPaint() const;