Reporting: Implement serializer.

net/reporting/reporting_service.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 "net/reporting/reporting_service.h"
 
 #include <memory>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/time/tick_clock.h"
 #include "base/time/time.h"
 #include "base/values.h"
 #include "net/reporting/reporting_cache.h"
 #include "net/reporting/reporting_context.h"
 #include "net/reporting/reporting_delegate.h"
 #include "net/reporting/reporting_header_parser.h"
 #include "url/gurl.h"
 
 namespace net {
 
 namespace {
 
 class ReportingServiceImpl : public ReportingService {
  public:
   ReportingServiceImpl(std::unique_ptr<ReportingContext> context)
-      : context_(std::move(context)) {}
+      : context_(std::move(context)) {
+    // TODO(juliatuttle): This can be slow, so it might be better to expose it
+    // as a separate method and call it separately from constructing everything.
+    context_->Initialize();
+  }
 
   ~ReportingServiceImpl() override {}
 
   void QueueReport(const GURL& url,
                    const std::string& group,
                    const std::string& type,
                    std::unique_ptr<const base::Value> body) override {
+    DCHECK(context_->initialized());
     context_->cache()->AddReport(url, group, type, std::move(body),
                                  context_->tick_clock()->NowTicks(), 0);
   }
 
   void ProcessHeader(const GURL& url,
                      const std::string& header_value) override {
+    DCHECK(context_->initialized());
     ReportingHeaderParser::ParseHeader(context_.get(), url, header_value);
   }
 
  private:
   std::unique_ptr<ReportingContext> context_;
 
   DISALLOW_COPY_AND_ASSIGN(ReportingServiceImpl);
 };
 
 }  // namespace
 
 ReportingService::~ReportingService() {}
 
 // static
 std::unique_ptr<ReportingService> ReportingService::Create(
     const ReportingPolicy& policy,
     URLRequestContext* request_context,
     std::unique_ptr<ReportingDelegate> delegate) {
   return base::MakeUnique<ReportingServiceImpl>(
       ReportingContext::Create(policy, std::move(delegate), request_context));
 }
 
 // static
 std::unique_ptr<ReportingService> ReportingService::CreateForTesting(
     std::unique_ptr<ReportingContext> reporting_context) {
   return base::MakeUnique<ReportingServiceImpl>(std::move(reporting_context));
 }
 
 }  // namespace net