aura: Fix launcher tooltips:

ui/views/bubble/bubble_border.cc

Index: ui/views/bubble/bubble_border.cc
diff --git a/ui/views/bubble/bubble_border.cc b/ui/views/bubble/bubble_border.cc
index a82382c8eb47c50e86d12f6aba20835dbc9a03ba..819b2eae414cae93fd3ee80d1c1adb234ed2e175 100644
--- a/ui/views/bubble/bubble_border.cc
+++ b/ui/views/bubble/bubble_border.cc
@@ -212,7 +212,7 @@ void BubbleBorder::GetInsetsForArrowLocation(gfx::Insets* insets,
   insets->Set(top, left, bottom, right);
 }
 
-int BubbleBorder::border_thickness() const {
+int BubbleBorder::BorderThickness() const {
   return images_->border_thickness;
 }
 
@@ -505,7 +505,7 @@ void BubbleBackground::Paint(gfx::Canvas* canvas, views::View* view) const {
   paint.setColor(border_->background_color());
   SkPath path;
   gfx::Rect bounds(view->GetContentsBounds());
-  bounds.Inset(-border_->border_thickness(), -border_->border_thickness());
+  bounds.Inset(-border_->BorderThickness(), -border_->BorderThickness());
   SkScalar radius = SkIntToScalar(BubbleBorder::GetCornerRadius());
   path.addRoundRect(gfx::RectToSkRect(bounds), radius, radius);
   canvas->DrawPath(path, paint);