Allow use of metrics url override outside of Chromecast

components/metrics/metrics_service.cc

Index: components/metrics/metrics_service.cc
diff --git a/components/metrics/metrics_service.cc b/components/metrics/metrics_service.cc
index 18ec2e55bddae79355348dcc22bbf3e848231092..9ddbe83db6088cc39bff341064b0698c0724c5a6 100644
--- a/components/metrics/metrics_service.cc
+++ b/components/metrics/metrics_service.cc
@@ -167,6 +167,7 @@
 
 #include "base/bind.h"
 #include "base/callback.h"
+#include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/histogram_base.h"
 #include "base/metrics/histogram_samples.h"
@@ -189,6 +190,7 @@
 #include "components/metrics/metrics_reporting_scheduler.h"
 #include "components/metrics/metrics_service_client.h"
 #include "components/metrics/metrics_state_manager.h"
+#include "components/metrics/metrics_switches.h"
 #include "components/variations/entropy_provider.h"
 
 namespace metrics {
@@ -1020,8 +1022,16 @@ void MetricsService::SendStagedLog() {
   log_upload_in_progress_ = true;
 
   if (!log_uploader_) {
+    std::string server_url(kServerUrl);
+    base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
+    if (command_line->HasSwitch(switches::kOverrideMetricsUploadUrl)) {
+      server_url = command_line->GetSwitchValueASCII(
+          switches::kOverrideMetricsUploadUrl);
+      DCHECK(!server_url.empty());
+    }
+
     log_uploader_ = client_->CreateUploader(
-        kServerUrl, kMimeType,
+        server_url, kMimeType,
         base::Bind(&MetricsService::OnLogUploadComplete,
                    self_ptr_factory_.GetWeakPtr()));
   }