Add skia::RefPtr class to wrap ref counted classes from Skia.

chrome/browser/ui/views/detachable_toolbar_view.cc

Index: chrome/browser/ui/views/detachable_toolbar_view.cc
diff --git a/chrome/browser/ui/views/detachable_toolbar_view.cc b/chrome/browser/ui/views/detachable_toolbar_view.cc
index 354af9fac055e5979e2853922d0d59e2e3a77f98..07ae8ccb0e2c47f031a114ed963c17a956ba9bf7 100644
--- a/chrome/browser/ui/views/detachable_toolbar_view.cc
+++ b/chrome/browser/ui/views/detachable_toolbar_view.cc
@@ -6,6 +6,7 @@
 
 #include "chrome/browser/themes/theme_service.h"
 #include "grit/theme_resources.h"
+#include "skia/ext/refptr.h"
 #include "third_party/skia/include/core/SkShader.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/canvas.h"
@@ -119,12 +120,13 @@ void DetachableToolbarView::PaintVerticalDivider(gfx::Canvas* canvas,
                                                  SkColor top_color,
                                                  SkColor middle_color,
                                                  SkColor bottom_color) {
+  skia::RefPtr<SkShader> gradient;
+
   // Draw the upper half of the divider.
   SkPaint paint;
-  SkSafeUnref(paint.setShader(gfx::CreateGradientShader(vertical_padding + 1,
-                                                        height / 2,
-                                                        top_color,
-                                                        middle_color)));
+  gradient = gfx::CreateGradientShader(vertical_padding + 1, height / 2,
+                                       top_color, middle_color);
+  paint.setShader(gradient.get());
   SkRect rc = { SkIntToScalar(x),
                 SkIntToScalar(vertical_padding + 1),
                 SkIntToScalar(x + 1),
@@ -133,8 +135,9 @@ void DetachableToolbarView::PaintVerticalDivider(gfx::Canvas* canvas,
 
   // Draw the lower half of the divider.
   SkPaint paint_down;
-  SkSafeUnref(paint_down.setShader(gfx::CreateGradientShader(
-          height / 2, height - vertical_padding, middle_color, bottom_color)));
+  gradient = gfx::CreateGradientShader(height / 2, height - vertical_padding,
+                                       middle_color, bottom_color);
+  paint_down.setShader(gradient.get());
   SkRect rc_down = { SkIntToScalar(x),
                      SkIntToScalar(height / 2),
                      SkIntToScalar(x + 1),