Change PopDataAsValue to return a std::unique_ptr.

dbus/values_util.h

Index: dbus/values_util.h
diff --git a/dbus/values_util.h b/dbus/values_util.h
index b6f4ff3b10edc348aafe3f880f4950b59f4d55fb..81b839b1882edb9d9bec6442756f0548c8289951 100644
--- a/dbus/values_util.h
+++ b/dbus/values_util.h
@@ -7,6 +7,8 @@
 
 #include <stdint.h>
 
+#include <memory>
+
 #include "dbus/dbus_export.h"
 
 namespace base {
@@ -22,7 +24,8 @@ class MessageWriter;
 // Returns NULL if an error occurs.
 // Note: Integer values larger than int32_t (including uint32_t) are converted
 // to double.  Non-string dictionary keys are converted to strings.
-CHROME_DBUS_EXPORT base::Value* PopDataAsValue(MessageReader* reader);
+CHROME_DBUS_EXPORT std::unique_ptr<base::Value> PopDataAsValue(
+    MessageReader* reader);
 
 // Appends a basic type value to |writer|. Basic types are BOOLEAN, INTEGER,
 // DOUBLE, and STRING. Use this function for values that are known to be basic