[Views] Add a capability to the bubble delegate to be able to show the title in BaseFont.

ui/views/bubble/bubble_delegate.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_BUBBLE_BUBBLE_DELEGATE_H_
 #define UI_VIEWS_BUBBLE_BUBBLE_DELEGATE_H_
 
 #include "base/gtest_prod_util.h"
 #include "ui/views/bubble/bubble_border.h"
 #include "ui/views/widget/widget.h"
@@ skipping 31 matching lines @@
   // WidgetObserver overrides:
   virtual void OnWidgetDestroying(Widget* widget) OVERRIDE;
   virtual void OnWidgetVisibilityChanging(Widget* widget, bool visible)
       OVERRIDE;
   virtual void OnWidgetVisibilityChanged(Widget* widget, bool visible)
       OVERRIDE;
   virtual void OnWidgetActivationChanged(Widget* widget, bool active) OVERRIDE;
   virtual void OnWidgetBoundsChanged(Widget* widget,
                                      const gfx::Rect& new_bounds) OVERRIDE;
 
+  // Return true to show the bubble title in the base font
+  // (default is MediumFont).
+  virtual bool ShouldShowWindowTitleInBaseFont() const;

[msw, 2014/06/10 18:16:05]

How about GetTitleFontList?

+
   bool close_on_esc() const { return close_on_esc_; }
   void set_close_on_esc(bool close_on_esc) { close_on_esc_ = close_on_esc; }
 
   bool close_on_deactivate() const { return close_on_deactivate_; }
   void set_close_on_deactivate(bool close) { close_on_deactivate_ = close; }
 
   View* GetAnchorView() const;
   Widget* anchor_widget() const { return anchor_widget_; }
 
   // The anchor rect is used in the absence of an assigned anchor view.
@@ skipping 129 matching lines @@
 
   // Parent native window of the bubble.
   gfx::NativeView parent_window_;
 
   DISALLOW_COPY_AND_ASSIGN(BubbleDelegateView);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_BUBBLE_BUBBLE_DELEGATE_H_