Reporting: Add histograms.

content/browser/net/reporting_service_proxy.cc

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/net/reporting_service_proxy.h"
 
 #include <memory>
 #include <string>
 #include <utility>
 
 #include "base/memory/ref_counted.h"
 #include "base/values.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/site_instance.h"
 #include "content/public/browser/storage_partition.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
+#include "net/reporting/reporting_report.h"
 #include "net/reporting/reporting_service.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "third_party/WebKit/public/platform/reporting.mojom.h"
 #include "url/gurl.h"
 
 namespace content {
 
 namespace {
 
 class ReportingServiceProxyImpl : public mojom::ReportingServiceProxy {
  public:
   ReportingServiceProxyImpl(
       scoped_refptr<net::URLRequestContextGetter> request_context_getter)
       : request_context_getter_(std::move(request_context_getter)) {}
 
   // mojom::ReportingServiceProxy:
   void QueueReport(const GURL& url,
                    const std::string& group,
                    const std::string& type,
                    std::unique_ptr<base::Value> body) override {
     std::unique_ptr<const base::Value> const_body =
         base::WrapUnique(body.release());
 
     net::URLRequestContext* request_context =
         request_context_getter_->GetURLRequestContext();
-    if (!request_context)
+    if (!request_context) {
+      net::ReportingReport::RecordReportDiscardedForNoURLRequestContext();
       return;
+    }
 
     net::ReportingService* reporting_service =
         request_context->reporting_service();
-    if (!reporting_service)
+    if (!reporting_service) {
+      net::ReportingReport::RecordReportDiscardedForNoReportingService();
       return;
+    }
 
     reporting_service->QueueReport(url, group, type, std::move(const_body));
   }
 
  private:
   scoped_refptr<net::URLRequestContextGetter> request_context_getter_;
 };
 
 void CreateReportingServiceProxyOnNetworkTaskRunner(
     mojom::ReportingServiceProxyRequest request,
@@ skipping 14 matching lines @@
       storage_partition->GetURLRequestContext());
   scoped_refptr<base::SingleThreadTaskRunner> network_task_runner(
       request_context_getter->GetNetworkTaskRunner());
   network_task_runner->PostTask(
       FROM_HERE,
       base::BindOnce(&CreateReportingServiceProxyOnNetworkTaskRunner,
                      std::move(request), std::move(request_context_getter)));
 }
 
 }  // namespace content