Remove views::Label::SetDisabledColor(). Replace with typography colors.

ui/views/controls/label.h

Index: ui/views/controls/label.h
diff --git a/ui/views/controls/label.h b/ui/views/controls/label.h
index 0881558cacb215faa7342a9d493257f4e80da3bc..1beccd734277170b3f3e9cee65add1250910aa56 100644
--- a/ui/views/controls/label.h
+++ b/ui/views/controls/label.h
@@ -82,10 +82,9 @@ class VIEWS_EXPORT Label : public View,
   // Sets the color.  This will automatically force the color to be readable
   // over the current background color, if auto color readability is enabled.
   virtual void SetEnabledColor(SkColor color);
-  void SetDisabledColor(SkColor color);
+  void SetDisabledColorForLabelButton(SkColor color);
 
   SkColor enabled_color() const { return actual_enabled_color_; }
-  SkColor disabled_color() const { return actual_disabled_color_; }
 
   // Sets the background color. This won't be explicitly drawn, but the label
   // will force the text color to be readable over it.
@@ -326,6 +325,10 @@ class VIEWS_EXPORT Label : public View,
   // Builds |context_menu_contents_|.
   void BuildContextMenuContents();
 
+  // Where the label appears in the UI. Passed in from the constructor. This is
+  // a value from views::style::TextContext or an enum that extends it.
+  const int text_context_;
+
   // An un-elided and single-line RenderText object used for preferred sizing.
   std::unique_ptr<gfx::RenderText> render_text_;