Add field trials and platform to permission report

BUG=613883

Review-Url: https://codereview.chromium.org/2073713002
Cr-Commit-Position: refs/heads/master@{#402628}

chrome/browser/safe_browsing/permission_reporter.cc

@@ -5,6 +5,7 @@
 #include "base/memory/ptr_util.h"
 #include "chrome/browser/safe_browsing/permission_reporter.h"
 #include "chrome/common/safe_browsing/permission_report.pb.h"
+#include "components/variations/active_field_trials.h"
 #include "content/public/browser/permission_type.h"
 #include "net/url_request/report_sender.h"
 
@@ -103,8 +104,25 @@ bool PermissionReporter::BuildReport(const GURL& origin,
   report.set_origin(origin.spec());
   report.set_permission(PermissionTypeForReport(permission));
   report.set_action(PermissionActionForReport(action));
-  // TODO(stefanocs): Collect field trials and platform type from global
-  // variables to the permission report.
+
+  // Collect platform data.
+#if defined(OS_ANDROID)
+  report.set_platform_type(PermissionReport::ANDROID_PLATFORM);
+#elif defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_CHROMEOS) || \
+    defined(OS_LINUX)
+  report.set_platform_type(PermissionReport::DESKTOP_PLATFORM);
+#else
+#error Unsupported platform.
+#endif
+
+  // Collect field trial data.
+  std::vector<variations::ActiveGroupId> active_group_ids;
+  variations::GetFieldTrialActiveGroupIds(&active_group_ids);
+  for (auto active_group_id : active_group_ids) {
+    PermissionReport::FieldTrial* field_trial = report.add_field_trials();
+    field_trial->set_name_id(active_group_id.name);
+    field_trial->set_group_id(active_group_id.group);
+  }
   return report.SerializeToString(output);
 }
 

chrome/browser/safe_browsing/permission_reporter_unittest.cc

@@ -4,8 +4,11 @@
 
 #include "chrome/browser/safe_browsing/permission_reporter.h"
 
+#include "base/feature_list.h"
 #include "base/memory/ptr_util.h"
+#include "base/metrics/field_trial.h"
 #include "chrome/common/safe_browsing/permission_report.pb.h"
+#include "components/variations/active_field_trials.h"
 #include "content/public/browser/permission_type.h"
 #include "net/url_request/report_sender.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -15,6 +18,7 @@ using content::PermissionType;
 namespace safe_browsing {
 
 namespace {
+
 // URL to upload permission action reports.
 const char kPermissionActionReportingUploadUrl[] =
     "http://safebrowsing.googleusercontent.com/safebrowsing/clientreport/"
@@ -28,6 +32,21 @@ const PermissionReport::PermissionType kDummyPermissionReportPermission =
 const PermissionReport::Action kDummyPermissionReportAction =
     PermissionReport::GRANTED;
 
+const char kDummyTrialOne[] = "trial one";
+const char kDummyGroupOne[] = "group one";
+const char kDummyTrialTwo[] = "trial two";
+const char kDummyGroupTwo[] = "group two";
+
+const char kFeatureOnByDefaultName[] = "OnByDefault";
+struct base::Feature kFeatureOnByDefault {
+  kFeatureOnByDefaultName, base::FEATURE_ENABLED_BY_DEFAULT
+};
+
+const char kFeatureOffByDefaultName[] = "OffByDefault";
+struct base::Feature kFeatureOffByDefault {
+  kFeatureOffByDefaultName, base::FEATURE_DISABLED_BY_DEFAULT
+};
+
 // A mock ReportSender that keeps track of the last report sent.
 class MockReportSender : public net::ReportSender {
  public:
@@ -77,9 +96,70 @@ TEST_F(PermissionReporterTest, SendReport) {
   EXPECT_EQ(kDummyPermissionReportPermission, permission_report.permission());
   EXPECT_EQ(kDummyPermissionReportAction, permission_report.action());
   EXPECT_EQ(kDummyOrigin, permission_report.origin());
+#if defined(OS_ANDROID)
+  EXPECT_EQ(PermissionReport::ANDROID_PLATFORM,
+            permission_report.platform_type());
+#elif defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_CHROMEOS) || \
+    defined(OS_LINUX)
+  EXPECT_EQ(PermissionReport::DESKTOP_PLATFORM,
+            permission_report.platform_type());
+#endif
 
   EXPECT_EQ(GURL(kPermissionActionReportingUploadUrl),
             mock_report_sender_->latest_report_uri());
 }
 
+// Test that PermissionReporter::SendReport sends a serialized report string
+// with field trials to SafeBrowsing CSD servers.
+TEST_F(PermissionReporterTest, SendReportWithFieldTrials) {
+  typedef std::set<variations::ActiveGroupId, variations::ActiveGroupIdCompare>
+      ActiveGroupIdSet;
+
+  // Add and activate dummy field trials.
+  base::FieldTrialList field_trial_list(nullptr);
+  std::unique_ptr<base::FeatureList> feature_list(new base::FeatureList);
+  base::FieldTrial* trial_one =
+      base::FieldTrialList::CreateFieldTrial(kDummyTrialOne, kDummyGroupOne);
+  base::FieldTrial* trial_two =
+      base::FieldTrialList::CreateFieldTrial(kDummyTrialTwo, kDummyGroupTwo);
+
+  feature_list->RegisterFieldTrialOverride(
+      kFeatureOnByDefaultName, base::FeatureList::OVERRIDE_ENABLE_FEATURE,
+      trial_one);
+  feature_list->RegisterFieldTrialOverride(
+      kFeatureOffByDefaultName, base::FeatureList::OVERRIDE_ENABLE_FEATURE,
+      trial_two);
+
+  base::FeatureList::ClearInstanceForTesting();
+  base::FeatureList::SetInstance(std::move(feature_list));
+
+  // This is necessary to activate both field trials.
+  base::FeatureList::IsEnabled(kFeatureOnByDefault);
+  base::FeatureList::IsEnabled(kFeatureOffByDefault);
+
+  EXPECT_TRUE(base::FieldTrialList::IsTrialActive(trial_one->trial_name()));
+  EXPECT_TRUE(base::FieldTrialList::IsTrialActive(trial_two->trial_name()));
+
+  permission_reporter_->SendReport(GURL(kDummyOrigin), kDummyPermission,
+                                   kDummyAction);
+
+  PermissionReport permission_report;
+  ASSERT_TRUE(
+      permission_report.ParseFromString(mock_report_sender_->latest_report()));
+
+  variations::ActiveGroupId field_trial_one =
+      variations::MakeActiveGroupId(kDummyTrialOne, kDummyGroupOne);
+  variations::ActiveGroupId field_trial_two =
+      variations::MakeActiveGroupId(kDummyTrialTwo, kDummyGroupTwo);
+  ActiveGroupIdSet expected_group_ids = {field_trial_one, field_trial_two};
+
+  EXPECT_EQ(2, permission_report.field_trials().size());
+  for (auto field_trial : permission_report.field_trials()) {
+    variations::ActiveGroupId group_id = {field_trial.name_id(),
+                                          field_trial.group_id()};
+    EXPECT_EQ(1U, expected_group_ids.erase(group_id));
+  }
+  EXPECT_EQ(0U, expected_group_ids.size());
+}
+
 }  // namespace safe_browsing