cc: Increment the ref count when assigning the SkImageFilter

cc/damage_tracker_unittest.cc

Index: cc/damage_tracker_unittest.cc
diff --git a/cc/damage_tracker_unittest.cc b/cc/damage_tracker_unittest.cc
index 008dc93f986c7d4c921d633178203e1e9aae36c9..8e2fec09d624c79ebdd49b044f2068530dfad627 100644
--- a/cc/damage_tracker_unittest.cc
+++ b/cc/damage_tracker_unittest.cc
@@ -396,8 +396,7 @@ TEST_F(DamageTrackerTest, verifyDamageForImageFilter)
     // Allow us to set damage on child too.
     child->setDrawsContent(true);
 
-    SkAutoTUnref<SkImageFilter> filter(new SkBlurImageFilter(SkIntToScalar(2),
-                                                             SkIntToScalar(2)));
+    SkRefPtr<SkImageFilter> filter(new SkBlurImageFilter(SkIntToScalar(2), SkIntToScalar(2)));

[Stephen White, 2012/11/21 17:23:00]

I don't think this is correct.  I think this'll end up with a refcount of 2
after assignment to the SkRefPtr, and 1 at the end of the function.

     // Setting the filter will damage the whole surface.
     clearDamageForAllSurfaces(root.get());
     child->setFilter(filter);