Add logging to remote commands

chrome/browser/chromeos/policy/system_log_uploader.cc

Index: chrome/browser/chromeos/policy/system_log_uploader.cc
diff --git a/chrome/browser/chromeos/policy/system_log_uploader.cc b/chrome/browser/chromeos/policy/system_log_uploader.cc
index 58e83b5331f572d645fbb6dd9714acad6586381b..4a6240a1c341080fbf4bc0c999359786093ccc60 100644
--- a/chrome/browser/chromeos/policy/system_log_uploader.cc
+++ b/chrome/browser/chromeos/policy/system_log_uploader.cc
@@ -101,6 +101,8 @@ std::unique_ptr<policy::UploadJob> SystemLogDelegate::CreateUploadJob(
       g_browser_process->system_request_context();
   std::string robot_account_id =
       device_oauth2_token_service->GetRobotAccountId();
+
+  LOG(WARNING) << "Creating upload job for system log";
   return std::unique_ptr<policy::UploadJob>(new policy::UploadJobImpl(
       upload_url, robot_account_id, device_oauth2_token_service,
       system_request_context, delegate,
@@ -186,6 +188,7 @@ SystemLogUploader::SystemLogUploader(
 SystemLogUploader::~SystemLogUploader() {}
 
 void SystemLogUploader::OnSuccess() {
+  LOG(WARNING) << "Upload successful.";
   upload_job_.reset();
   last_upload_attempt_ = base::Time::NowFromSystemTime();
   retry_count_ = 0;
@@ -203,10 +206,12 @@ void SystemLogUploader::OnFailure(UploadJob::ErrorCode error_code) {
   //  attempt and schedule the next one using the normal delay. Otherwise, retry
   //  uploading after kErrorUploadDelayMs milliseconds.
   if (retry_count_++ < kMaxNumRetries) {
+    LOG(ERROR) << "Upload failed, retrying later.";

[Andrew T Wilson (Slow), 2016/05/04 14:43:23]

Log the error code.

[Marton Hunyady, 2016/05/09 13:48:15]

Done.

     ScheduleNextSystemLogUpload(
         base::TimeDelta::FromMilliseconds(kErrorUploadDelayMs));
   } else {
     // No more retries.

[Andrew T Wilson (Slow), 2016/05/04 14:43:23]

Log error code (unless it's logged elsewhere)

[Marton Hunyady, 2016/05/09 13:48:15]

Done.

+    LOG(ERROR) << "Upload failed, no more retries.";
     retry_count_ = 0;
     ScheduleNextSystemLogUpload(upload_frequency_);
   }