More flexibility in BubbleBorder arrow rendering.

ash/system/tray/system_tray.cc

Index: ash/system/tray/system_tray.cc
diff --git a/ash/system/tray/system_tray.cc b/ash/system/tray/system_tray.cc
index dba58c96b607dfceccf1023370f96755a245ca7a..9448859ec2410c5f29ab6730a8a7fb017759ce6f 100644
--- a/ash/system/tray/system_tray.cc
+++ b/ash/system/tray/system_tray.cc
@@ -375,7 +375,10 @@ void SystemTray::ShowItems(const std::vector<SystemTrayItem*>& items,
     init_params.arrow_offset = arrow_offset;
     // For Volume and Brightness we don't want to show an arrow when
     // they are shown in a bubble by themselves.
-    init_params.hide_arrow = items.size() == 1 && items[0]->ShouldHideArrow();
+    init_params.arrow_paint_type = views::BubbleBorder::PAINT_NORMAL;
+    if (items.size() == 1 && items[0]->ShouldHideArrow()) {

[msw, 2013/02/21 07:29:29]

nit: remove braces.

[dewittj, 2013/02/21 19:13:57]

Done.
This is my Chromium style weakness.  Sorry!

+      init_params.arrow_paint_type = views::BubbleBorder::PAINT_TRANSPARENT;
+    }
     SystemTrayBubble* bubble = new SystemTrayBubble(this, items, bubble_type);
     system_bubble_.reset(new internal::SystemBubbleWrapper(bubble));
     system_bubble_->InitView(this, tray_container(), &init_params);