chrome: Use skia::RefPtr for skia ref-counted objects.

chrome/browser/ui/gtk/infobars/infobar_container_gtk.cc

Index: chrome/browser/ui/gtk/infobars/infobar_container_gtk.cc
diff --git a/chrome/browser/ui/gtk/infobars/infobar_container_gtk.cc b/chrome/browser/ui/gtk/infobars/infobar_container_gtk.cc
index 4a2162262213b0027cb0a70dcc15e07d0f86f010..912e1464fa81c9d74b53c30319aa2a439cd077ce 100644
--- a/chrome/browser/ui/gtk/infobars/infobar_container_gtk.cc
+++ b/chrome/browser/ui/gtk/infobars/infobar_container_gtk.cc
@@ -179,10 +179,10 @@ void InfoBarContainerGtk::PaintArrowOn(GtkWidget* widget,
   grad_colors[0] = source->ConvertGetColor(&InfoBarGtk::GetTopColor);
   grad_colors[1] = source->ConvertGetColor(&InfoBarGtk::GetBottomColor);
 
-  SkShader* gradient_shader = SkGradientShader::CreateLinear(
-      grad_points, grad_colors, NULL, 2, SkShader::kMirror_TileMode);
-  paint.setShader(gradient_shader);
-  gradient_shader->unref();
+  skia::RefPtr<SkShader> gradient_shader = skia::AdoptRef(
+      SkGradientShader::CreateLinear(
+          grad_points, grad_colors, NULL, 2, SkShader::kMirror_TileMode));
+  paint.setShader(gradient_shader.get());
 
   gfx::CanvasSkiaPaint canvas_paint(expose, false);
   SkCanvas& canvas = *canvas_paint.sk_canvas();