Start removing enum ui::ResourceBundle::FontStyle, fix MacViews font sizes

ui/views/bubble/bubble_frame_view.cc

Index: ui/views/bubble/bubble_frame_view.cc
diff --git a/ui/views/bubble/bubble_frame_view.cc b/ui/views/bubble/bubble_frame_view.cc
index c1028355467e7bc42c722837fc75acdd874f33bc..64bf37c5f869bcbca8b4abe758038a457d339cb6 100644
--- a/ui/views/bubble/bubble_frame_view.cc
+++ b/ui/views/bubble/bubble_frame_view.cc
@@ -8,6 +8,7 @@
 #include <utility>
 
 #include "build/build_config.h"
+#include "ui/base/default_style.h"
 #include "ui/base/hit_test.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
@@ -84,7 +85,7 @@ BubbleFrameView::BubbleFrameView(const gfx::Insets& title_margins,
 
   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
   title_ = new Label(base::string16(),
-                     rb.GetFontList(ui::ResourceBundle::MediumFont));
+                     rb.GetFontListWithDelta(ui::kTitleFontSizeDelta));
   title_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
   title_->set_collapse_when_hidden(true);
   title_->SetVisible(false);