Reporting: Plumb into RenderFrame via Mojo

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/common/net/reporting.mojom.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_service.h"
+#include "net/url_request/url_request_context.h"
+#include "net/url_request/url_request_context_getter.h"
+#include "url/gurl.h"
+
+namespace content {
+
+namespace {
+
+std::string ReportTypeEnumToString(mojom::ReportingReportType type) {
+  switch (type) {
+    case mojom::ReportingReportType::CSP:
+      return "csp";
+    case mojom::ReportingReportType::INTERVENTION:
+      return "intervention";
+    case mojom::ReportingReportType::DEPRECATION:
+      return "deprecation";
+    default:
+      return "";
+  }
+}
+
+void QueueReportOnIOThread(
+    scoped_refptr<net::URLRequestContextGetter> request_context_getter,
+    const GURL& url,
+    const std::string& group,
+    const std::string& type,
+    std::unique_ptr<const base::Value> body) {
+  net::URLRequestContext* request_context =
+      request_context_getter->GetURLRequestContext();
+  if (!request_context)
+    return;
+
+  net::ReportingService* reporting_service =
+      request_context->reporting_service();
+  if (!reporting_service)
+    return;
+
+  // TODO(juliatuttle): Get rid of this copy.
+  reporting_service->QueueReport(url, group, type, body->CreateDeepCopy());
+}
+
+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,
+                   mojom::ReportingReportType type_enum,
+                   std::unique_ptr<base::Value> body) override {
+    std::string type_string = ReportTypeEnumToString(type_enum);

[dcheng, 2017/05/24 00:23:12]

Hmm... I didn't realize we were just going to turn it back into a string. If
we're not going to do anything with this value (i.e. we don't try to interpret
it some way and we just forward it somewhere else), it seems better to just pass
a string through.

Sorry for not being clear on this point.

[Julia Tuttle, 2017/05/24 18:47:51]

Oops! Will revert.

+    if (type_string.empty())
+      return;
+
+    // TODO(juliatuttle): Get rid of this intermediate step.
+    const base::Value* raw_const_body = body.release();
+
+    request_context_getter_->GetNetworkTaskRunner()->PostTask(
+        FROM_HERE,
+        base::BindOnce(&QueueReportOnIOThread, request_context_getter_, url,
+                       group, type_string, base::WrapUnique(raw_const_body)));
+  }
+
+ private:
+  scoped_refptr<net::URLRequestContextGetter> request_context_getter_;
+};
+
+}  // namespace
+
+// static
+void CreateReportingServiceProxy(
+    SiteInstance* site_instance,
+    const service_manager::BindSourceInfo& source_info,
+    mojom::ReportingServiceProxyRequest request) {
+  BrowserContext* browser_context = site_instance->GetBrowserContext();
+  StoragePartition* storage_partition =
+      BrowserContext::GetStoragePartition(browser_context, site_instance);
+  // TODO(juliatuttle): Make sure making our own scoped_refptr is okay.
+  scoped_refptr<net::URLRequestContextGetter> request_context_getter(
+      storage_partition->GetURLRequestContext());
+  mojo::MakeStrongBinding(
+      base::MakeUnique<ReportingServiceProxyImpl>(request_context_getter),
+      std::move(request));
+}
+
+}  // namespace content