Change JSONReader::ReadToValue to return a scoped_ptr

chrome/test/chromedriver/chrome/mobile_device.cc

Index: chrome/test/chromedriver/chrome/mobile_device.cc
diff --git a/chrome/test/chromedriver/chrome/mobile_device.cc b/chrome/test/chromedriver/chrome/mobile_device.cc
index 683dd6c9b55ec73cb1339a3fb0fa0ca67a3ead69..26a8e75a34a50c62f28c05ed72697d7bc3cd602b 100644
--- a/chrome/test/chromedriver/chrome/mobile_device.cc
+++ b/chrome/test/chromedriver/chrome/mobile_device.cc
@@ -16,8 +16,8 @@ MobileDevice::~MobileDevice() {}
 Status FindMobileDevice(std::string device_name,
                         scoped_ptr<MobileDevice>* mobile_device) {
   base::JSONReader json_reader(base::JSON_ALLOW_TRAILING_COMMAS);
-  scoped_ptr<base::Value> devices_value;
-  devices_value.reset(json_reader.ReadToValue(kMobileDevices));
+  scoped_ptr<base::Value> devices_value =
+      json_reader.ReadToValue(kMobileDevices);
   if (!devices_value.get())
     return Status(kUnknownError,
                   "could not parse mobile device list because " +