Allow dialogs to use a custom View as their title.

ui/views/bubble/bubble_frame_view.h

Index: ui/views/bubble/bubble_frame_view.h
diff --git a/ui/views/bubble/bubble_frame_view.h b/ui/views/bubble/bubble_frame_view.h
index 4f4d94647a9d20d963fecd7794bb06b640751441..aa658fee9e6fae27c1fec49f1e3a49bb54a2fcf7 100644
--- a/ui/views/bubble/bubble_frame_view.h
+++ b/ui/views/bubble/bubble_frame_view.h
@@ -8,19 +8,16 @@
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
+#include "ui/gfx/font_list.h"
 #include "ui/gfx/geometry/insets.h"
 #include "ui/views/controls/button/button.h"
 #include "ui/views/window/non_client_view.h"
 
-namespace gfx {
-class FontList;
-}
-
 namespace views {
 
-class Label;
 class BubbleBorder;
 class ImageView;
+class StyledLabel;
 
 // The non-client frame view of bubble-styled widgets.
 class VIEWS_EXPORT BubbleFrameView : public NonClientFrameView,
@@ -124,9 +121,12 @@ class VIEWS_EXPORT BubbleFrameView : public NonClientFrameView,
   // Margins between the content and the inside of the border, in pixels.
   gfx::Insets content_margins_;
 
+  // The font list used by the title.
+  gfx::FontList title_font_list_;
+
   // The optional title icon, title, and (x) close button.
   views::ImageView* title_icon_;
-  Label* title_;
+  StyledLabel* title_;
   Button* close_;
 
   // A view to contain the footnote view, if it exists.