Allow dialogs to use a custom View as their title.

ui/views/bubble/bubble_dialog_delegate.h

Index: ui/views/bubble/bubble_dialog_delegate.h
diff --git a/ui/views/bubble/bubble_dialog_delegate.h b/ui/views/bubble/bubble_dialog_delegate.h
index 76d0235006f3592aedad9273ba5d391f66e2042c..c3fc547307f79da574d1ffbee504911a8f33b7a8 100644
--- a/ui/views/bubble/bubble_dialog_delegate.h
+++ b/ui/views/bubble/bubble_dialog_delegate.h
@@ -15,7 +15,6 @@
 #include "ui/views/window/dialog_delegate.h"
 
 namespace gfx {
-class FontList;
 class Rect;
 }
 
@@ -130,10 +129,6 @@ class VIEWS_EXPORT BubbleDialogDelegateView : public DialogDelegateView,
   // Get bubble bounds from the anchor rect and client view's preferred size.
   virtual gfx::Rect GetBubbleBounds();
 
-  // Return a FontList to use for the title of the bubble.
-  // (The default is MediumFont).
-  virtual const gfx::FontList& GetTitleFontList() const;
-
   // View overrides:
   void OnNativeThemeChanged(const ui::NativeTheme* theme) override;