Convert //cc from scoped_ptr to std::unique_ptr.

cc/output/filter_operation.cc

Index: cc/output/filter_operation.cc
diff --git a/cc/output/filter_operation.cc b/cc/output/filter_operation.cc
index a37d27d3b2b9728e896f9327c65d4a80dff5e7d2..1b2cca70060d2868caae9c49701f49ee8fa692e5 100644
--- a/cc/output/filter_operation.cc
+++ b/cc/output/filter_operation.cc
@@ -303,7 +303,7 @@ void FilterOperation::AsValueInto(base::trace_event::TracedValue* value) const {
     case FilterOperation::ALPHA_THRESHOLD: {
         value->SetDouble("inner_threshold", amount_);
         value->SetDouble("outer_threshold", outer_threshold_);
-        scoped_ptr<base::ListValue> region_value(new base::ListValue());
+        std::unique_ptr<base::ListValue> region_value(new base::ListValue());
         value->BeginArray("region");
         for (SkRegion::Iterator it(region_); !it.done(); it.next()) {
           value->AppendInteger(it.rect().x());