Simplify capturing of base::JSONReader::Read() return value. base::JSONReader::Read() returns a std::unique_ptr<Value>, which can simply be captured into a std::unique_ptr<Value> variable instead of calling .release() on the returned unique_ptr and constructing a unique_ptr from the released raw pointer. BUG=None TEST=Run unit tests. Change-Id: I6be2fb14676be31ae578afceda2410a4b5f6af5e Reviewed-on: https://chromium-review.googlesource.com/438760 Commit-Ready: Ben Chan <[email protected]> Tested-by: Ben Chan <[email protected]> Reviewed-by: Dan Erat <[email protected]>