Convert //chrome/browser/chromeos from scoped_ptr to std::unique_ptr

chrome/browser/chromeos/settings/device_oauth2_token_service.cc

Index: chrome/browser/chromeos/settings/device_oauth2_token_service.cc
diff --git a/chrome/browser/chromeos/settings/device_oauth2_token_service.cc b/chrome/browser/chromeos/settings/device_oauth2_token_service.cc
index f92b0aa2d9a512bed359e19841225e7938413181..aae9a85b5f6298b0f6287eda5cba0335a890ba69 100644
--- a/chrome/browser/chromeos/settings/device_oauth2_token_service.cc
+++ b/chrome/browser/chromeos/settings/device_oauth2_token_service.cc
@@ -113,7 +113,7 @@ void DeviceOAuth2TokenService::FlushPendingRequests(
   for (std::vector<PendingRequest*>::iterator request(requests.begin());
        request != requests.end();
        ++request) {
-    scoped_ptr<PendingRequest> scoped_request(*request);
+    std::unique_ptr<PendingRequest> scoped_request(*request);
     if (!scoped_request->request)
       continue;